Nurse!

Being a little too rah-rah backfired immediately on a college football coach calling shots for the Army -- he got headbutted by one of his own players ... who still had their helmet on.

Indeed ... ouch. This went down Saturday when a sideline coach tried congratulating an offensive lineman during a timeout, after the Army Black Knights got on the board against the Cincinnati Bearcats. This is something players often do to each other -- the distinction being ... both parties are usually still wearing helmets.

Unfortunately, this coach and lineman seemed to forget that. Check it out ... coach comes up for some sorta embrace, but the OL must've thought he wanted to go noggin-to-noggin -- 'cause he went head-first into the guy's face, knocking him back and making him stumble.

The coach is visibly disoriented as he tries to regain his composure and others around him make sure he's okay. Frankly, he might have suffered a concussion -- it was a hard hit.

#59 definitely felt bad -- you can see he stuck around too to see if his coach was alright. It's unclear if he was treated for a head injury or not, or if he just shook it off. Either way, it's a very healthy reminder that football can be dangerous ... on and off the field, apparently.

Ron Paul is recovering in the hospital after suffering an apparent medical emergency while doing a live online broadcast.

The former 12-term congressman from Texas and three-time presidential candidate was in the middle of his "Ron Paul Liberty Report" live stream Friday when he suffered what appeared to be a stroke, though that has not been confirmed.

Watch the video ... the 85-year-old was opining about the economy when he suddenly started slurring his speech. His co-host was clearly dismayed as Paul struggled to speak before the video cuts out.

Paul was taken to a hospital reportedly for "precautionary reasons." Not long after the scary episode ... Paul took to Twitter and told his nearly 675k followers, "I am doing fine. Thank you for your concern."

LAPD is investigating after a truck drove through a crowd protesting the Breonna Taylor grand jury decision ... sending at least one person to the hospital,

Law enforcement sources tell TMZ ... the terrifying incident went down Thursday night around 9 PM after protesters had gathered at the Hollywood Forever Cemetery.

Video of the incident shows the crowd chanting, "No justice, no peace" when, out of nowhere, the pickup truck plows through and slams into one person who was violently thrown back onto the road. Protesters quickly swarmed the truck, banging on it to make the driver stop ... but they fled down Sunset Blvd.

We're told the driver -- who was ID'd and detained by cops but not arrested -- claimed they were trying to escape after being attacked. Police are now investigating to see if the driver was genuinely the victim of an assault or a hit-and-run suspect. As for the protester who was hit ... we're told they were taken to the hospital with non-life-threatening injuries.

A photojournalist told the Los Angeles Times the truck was traveling against the flow of the crowd and definitely instigated the incident.

Police are also investigating a separate incident ... after cops say a white Toyota Prius tried to drive around the same protest.

"Cake Boss" Buddy Valastro is recovering following a horrific bowling accident where his right hand was impaled ... and required multiple surgeries.

The famous baker suffered the gruesome injury Sunday while spending some QT with his family in the bowling alley in their home. A rep tells us there was a malfunction with the bowling pinsetter -- a problem the family's had in the past and usually a common fix, but not this time around.

We're told Buddy tried to release a bowling pin from the cage mechanism, but his right hand got lodged and compressed inside the unit. His rep described what happened next this way -- "Unable to remove his hand, [Buddy] can see a 1 1/2" metal rod slowly and repeatedly impale his hand three times between his ring finger and middle finger."

After more than 5 minutes, Buddy still couldn't get his hand free from the metal rod jammed through it. His rep says his sons, Buddy Jr. and Marco, "rushed to the garage for a reciprocating saw to cut through the metal rod" and finally got Buddy's hand free.

Buddy was rushed to a hospital where he underwent emergency surgery to remove the rod and stabilize the wound. A second surgery followed ... performed by renowned orthopedic surgeon Dr. Michelle Carlson in Manhattan.

The rep says Buddy will have an uphill battle given it's his dominant right hand. He faces a long road to recovery and therapy. Buddy's not exactly ready to call this a pinhead move ... but he's definitely kept his sense of humor through this painful ordeal.

He posted a pic Wednesday from his hospital bed with the caption, "I was involved in a terrible accident a few days ago... 😔 What do you think of my new accessory?"

Sending positive vibes, boss!!!

Terrible news for L.A. Chargers QB Tyrod Taylor ... he reportedly suffered a PUNCTURED LUNG while getting a painkiller injection from a team doctor before Sunday's game.

Taylor was receiving treatment for a cracked rib prior to kickoff before the Bolts' game against the Kansas City Chiefs ... when he started to experience chest pains.

The 31-year-old was taken to a nearby hospital to get checked out ... and rookie QB Justin Herbert became the last-minute starter for L.A.'s 23-20 loss to the defending world champs.

Now, ESPN's Adam Schefter is revealing Taylor's condition was all caused by a team doc who accidentally punctured the quarterback's lung while giving the injection.

Taylor -- who suffered the cracked ribs in Week 1 against the Bengals -- has been listed as "week-to-week" while he recovers from the punctured lung ... but ESPN reports doctors are saying Taylor should sit indefinitely while he recovers.

Whenever Taylor DOES get back to 100%, Chargers head coach Anthony Lynn says he'll get the starting gig back from the rookie.

Two pit bulls allegedly belonging to NFL wide receiver Demaryius Thomas attacked a woman and her pet dog this week causing major injuries ... and now officials have launched an investigation.

Jennifer Savage told WSB-TV in Atlanta she was hanging out on her front lawn with her own dog Thursday when out of nowhere, 2 pits went after her pooch.

"I look up, not even paying attention, and I see two pit bulls charging at me, showing their teeth and growing at me," Savage said.

The woman says she tumbled down a hill trying to protect her dog from the pit bulls -- but couldn't stop the animals from taking "huge chunks" out of her dog.

Savage says she suffered bite wounds to her arms and legs -- and needed stitches.

Her dog, Berkley, was so badly injured he needed emergency surgery.

"They shaved his entire body and there's punctures and tubes all in him," she told WSB-TV.

The news outlet says a police report identifies Thomas as the owner of the 2 pit bulls.

We're out to law enforcement but haven't heard back.

Savage told WSB-TV she's obviously very upset and wants to pursue charges against Thomas over the incident.

We reached out to DT's rep for comment but haven't heard back.

Thomas was a star WR for the Denver Broncos, Patriots, Texans and NY Jets -- but he's currently a free agent.

Patrick Mahomes and Deshaun Watson just came through in the clutch for each other's cities ... by donating meals to frontline workers in KC and Houston before facing off in the NFL season opener.

The Chiefs and Texans are set to kick-off the 2020 campaign Thursday night ... and the 2 quarterbacks decided to help their opposing team's city by sending some local grub to those battling the pandemic.

The reigning Super Bowl MVP decided to send some grub from Cool Runnings Jamaican Grill -- a Black-owned restaurant in Houston -- to workers at Harris Health System via Postmates.

Watson returned the favor by hooking up workers at the Truman Medical Centers in Kansas City with meals from Niecie's Restaurant, a local Black-owned soul food joint.

Let's not forget -- the last time these guys faced off on the field, the Texans blew a 24-0 lead in the divisional round of the playoffs as the Chiefs went on to win, 51-31 ... eventually winning the Super Bowl.

New police video obtained by TMZ Sports shows La'el Collins' car accident was more serious than initially believed ... the Cowboys star complained of neck pain while 2 vehicles sat mangled in a street nearby.

The NFL O-lineman was initially described as fine after he was involved in a wreck on Aug. 20 in Little Elm, Texas ... but you can see in the new footage, Collins was definitely aching.

As he and a responding police officer broke down how his 2015 Cadillac Escalade collided with a Volkswagen ... the 6'4", 320-pound Dallas player said his neck wasn't feeling well.

"Should I go to like a hospital or like a, what do you call it? An emergency room?" Collins asked the officer, before adding, "I mean, my neck -- my neck is hurting right here."

Of course, it ain't too difficult to see why Collins was in pain ... the damage on the two vehicles involved in the crash suggests a pretty violent collision took place.

Collins' driver's side quarter panel and front wheel were destroyed -- with one cop describing the rim on video as "broken" with a "complete crack" in it.

The other driver's car, meanwhile, had its whole front bumper ripped off.

According to the accident report, the other driver "failed to yield the right of way" after coming out of a stop sign and turned right into Collins' ride.

As for Collins' neck ... the Cowboys ultimately put him on injured reserve to start this season ... though they claim it's unrelated to the crash -- saying a hip problem he had been previously dealing with was the reason for the move.

Collins -- who will be out at least the first 3 weeks of the season while he's on IR -- is one of the Cowboys' best players and is considered a top-five right tackle in the league.

Rihanna appeared bruised and battered as she made a quick pit stop in L.A. -- turns out she's the latest victim of the electric scooter.

RiRi rolled up to Giorgio Baldi in Santa Monica Friday night, where she was trying to lay low in her Escalade while some staffers brought out food and drinks to her curbside. At one point, she removed her sunglasses ... and paps captured her looking the worse for wear -- a black eye and some swelling in her face.

Several media outlets posted the photos and suggested she'd been in some sort of physical altercation ... remembering the Chris Brown beating back in 2009. Not the case -- her rep tells us Rihanna was on an e-scooter a few days ago and ate it after the scooter flipped over, smacking her in the face and forehead.

We're told it looks worse than it is and she's healing.

Dr. Terry Dubrow says a truly brilliant doctor isn't always a good thing, because some of them use that genius for evil ... something he's learned in his new TV side gig.

The "Botched" star also hosts "License to Kill," and joined us on "TMZ Live" to issue a sober warning about how some physicians are able to pull off the perfect crime ... going completely undetected.

In fact, the famed plastic surgeon told us about an oncologist who put patients' lives at risk -- all so he could make major bank and live in the lap of luxury. Watch the video, it's a devious plot, to say the least.

Terry says the second season of "License to Kill" is gonna uncover plenty of horrifying cases like that. For instance, this Saturday's premiere on Oxygen follows a NY-based plastic surgeon who falsified his credentials and harmed patients in what should have been routine cosmetic surgeries.

Turns out those baby sharks aren't nearly as fun-loving as that song suggests -- you gotta see how this one locked onto a beachgoer's arm ... even AFTER he got out of the water!!!

This crazy video comes from Florida's Jensen Beach, where a guy was swimming Sunday when a baby shark attacked him in the water.

As you can see ... the lil oceanic beast -- possibly a nurse shark -- latched on and wouldn't release its jaws, forcing the guy to just hold it calmly to avoid further injury.

You can hear a witness say that if the guy can flip the shark upside down it would disorient it and make it let go, but every time he moves the shark clamps harder.

So instead, according to the guy who posted the vid, the man was taken to the hospital to remove the shark ... and he's okay.

This woman wanted to catch some ZZzz but instead had a SSssslithery nightmare after a 4-foot snake crawled into her throat!!!

The horrifying video was taken in Russia where doctors treated a woman who was rushed to the hospital saying she was not feeling well. She had claimed -- brace yourself -- a snake slithered into her mouth when she fell asleep in her yard. What the hell, Russia???

You can see from the video ... doctors are horrified after pulling the serpent out of her mouth. They're also terrified it's one long-ass snake ... relatively speaking considering it was apparently inside a WOMAN'S THROAT.

It's unclear if the snake was dead or alive at the time of extraction. Also, we can't confirm this vid is totally legit -- either way it's a totally terrifying sight.

The Ministry of Health in Republic of Dagestan is reportedly investigating the video and the chief doctor at the hospital where this allegedly went down said she was unaware of doctors performing the procedure at her facility.

Daniel Cormier is a LUCKY man -- because somehow he was able to recover from the torn cornea he suffered in his loss to Stipe Miocic ... and won't need eye surgery.

Cormier's left eye got so badly injured from an accidental finger poke during his August 15 UFC heavyweight title fight ... he couldn't open it during the last 2 rounds.

After the fight, Cormier told Joe Rogan, "I can't see anything out of my left eye. It's black."

But, DC appeared on ESPN's "DC & Helwani Show" on Monday and revealed he's actually healing up nicely.

"Luckily I was able to recover, and I feel better," Cormier said,

"The first week and a half, [the eye] was really bad, it wasn't opening, and it was completely blurry, but now it kind of feels like an eyelash is in it."

"I went and saw the doctor last week, and he told me I'm probably not going to have to have surgery, just kind of rest and recover. And today it feels good, but just feels like something in there, you know when you get an eyelash and can't get it out? It's just right in the corner."

It's great news, considering how bad it looked at the time.

As for his fighting future, Cormier insists he's done competing -- and will now focus on growing his career outside the Octagon.

"Yeah, it's over. And I'm not sad about it," Cormier said.

"I'm going to miss it, I'm going to miss the training camps, I'm going to miss the fights, there's nothing like a fight week, but you have to understand when it's your time. I feel it's time."

A Minneapolis cop is recovering after he was knocked down to the ground when an apparent looter threw a garbage can lid ... hitting the cop squarely in the neck.

The incident went down Wednesday night as people flooded the streets following a false report of a fatal police shooting of a Black man ... and just 3 months after George Floyd died there.

Check out the video -- which was broadcast on Facebook Live -- showing apparent looters making their way inside a Walgreens as a wave of others floods the streets. You see a cop calmly walking back to his patrol unit when, out of nowhere, a garbage can lid strikes him on his neck ... knocking him down. He radios for help and a couple cops show up to provide aid.

A police spokesperson said the cop suffered non-life-threatening injuries. The trouble started after false rumors quickly spread about cops fatally shooting a Black man. The Minneapolis PD tweeted -- and then deleted -- video they say shows a murder suspect turning the gun on himself as cops closed in on him. The tweet included, "No officer weapons were fired. This is a tragedy for our community that is still hurting."

The Minneapolis PD later tweeted and explained it like this, "[On Wednesday] MPD posted a video in order to dispel rumors that caused significant public safety concerns for our city. After receiving feedback from the community, we have removed the video due to the graphic nature and out of respect to the individual, his family and the community."

The Minneapolis Star-Tribune reported that community activists quickly mobilized to spread word that this was NOT a police shooting and didn't warrant a protest. But, clearly few heeded to that message ... because 33 people were arrested.

Police in Texas slammed a man's forehead into a curb during a bloody arrest ... and cops also had an elbow and knee pinned on his head.

The violent altercation with cops in Beaumont, Texas was caught on camera, with bystanders screaming in horror as multiple police officers flip the man off his stomach, causing his head to smash into the concrete curb in the middle of a parking lot.

The man, whose name is Omar, claims he suffered a gruesome injury during the arrest -- a bloody gash above his right eye from the violent impact, a cut that required at least six staples.

The head slamming into the curb is alarming, and so are the elbow and knee pinning his face to the ground. It's only been 3 months since George Floyd's neck met a knee that ended his life.

We reached out to police in Beaumont ... so far, no word back.

Tobias Harris took a scary fall on the basketball court that could've seriously injured the guy, or possibly even killed him -- but fortunately, it looks like he's going to be okay.

The 76ers star was playing in Sunday's game against the Boston Celtics, when at one point late in the third quarter, he went up for a defensive rebound ... but got his legs clipped by Jayson Tatum midair, which tilted his body and made him land hard on the paint headfirst.

You could see he was in excruciating pain as he writhed on the floor and couldn't get up at first. The refs stopped the game and the Philly's medical staff rushed out to the court to evaluate him. It appeared they signaled for trauma too, which meant it was serious.

It also looks like there might've been some blood spattered on the floor, which the med team was quick to wipe up as well.

The good news is that Tobias was able to get up and walk off the court on his own accord. He's said to have suffered a left eye laceration and was being evaluated for a concussion in the locker room.

It could've been much worse ... thank goodness it wasn't.