Nudity

Unlike the rest of the universe, Joan Rivers isn't all that curious about seeing how big Johnny Carson's penis really is in that sex tape -- because she says ... she's already seen it up close and personal.

Joan -- who guest hosted on Carson's "Tonight Show" for years -- said she and Carson had a "one night bounce" back in the day ... and he was hung like a horse.

10:16 AM PDT -- Lohan just told TMZ, "It's a lie." He says Spanish GGW was a real business venture and Reitano even met with Joe Francis. Michael also says there were no naked women involved. Has he seen the videos?

Michael Lohan used naked girls as bait to entice an investor to cough up thousands of dollars ... according to a guy who's suing Lohan for more than $1 million claiming he was had.

Richard Reitano says Lohan came to him in 2009 with a plan to dub over Girls Gone Wild videos in Espanol ... and then asked him to invest $100K.

According to the lawsuit, Lohan claimed GGW creator Joe Francis had given him the rights to the videos ... but he needed cash to get the ball rolling so Reitano loaned him $25K,

But Reitano claims it was all a scam because no videos were ever produced.

The video vixen who played tonsil hockey with Justin Bieber has graduated ... from groping the Biebs to fondling supermodel Nina Agdal in a bikini.

TMZ has learned Cailin Russo recently signed a modeling deal with swimwear giant Op, and her first photo shoot was the definition of a win-win (for the world) -- since she's practically attached at the hip with S.I. swimsuit babe Agdal.

Op honchos told us Cailin wasn't on their radar until they saw her in Bieber's "All That Matters" video -- so, uhh ... way to go Justin.

Flashing her boobs probably didn't hurt Cailin's career either.

Add Dave Chappelle to the list of people in awe of Johnny Carson's sex tape ... especially after we broke it down -- inch by inch -- for him last night.

Dave was actually in total disbelief when we told him about Carson's videotaped sex romp outside DBA nightclub in West Hollywood.

But you gotta see his face and hear his reaction when we tell him just how #blessed Carson was -- 10 inches by some reports.

The guys from "Workaholics" better give a big thank you to co-star Adam DeVine ... 'cause a porn site is offering to let them watch a smut session IN PERSON -- for giving it public props.

DeVine told Rolling Stone last week he has trouble writing at home because of Porn Hub ... adding, "they know what guys like" ... so the site reached out extending its open offer.

The letter says the company has partners who film close to the "Workaholics" set ... so Adam, Anders and Blake can cruise by anytime to check it out.

Porn has ripped marriages apart before ... but not like this.

TMZ has learned, one of the husbands from Season 2 of "Marriage Boot Camp" once did porn for a gay website called "Straight Guys for Gay Eyes."

Shaun Sulligan -- porn name Johnny Walsh -- shot two scenes for the website back in 2009 ... one sex scene with a woman and one solo masturbation scene.

It's pretty unusual -- the website basically markets straight sex to a gay male audience ... focusing on the man's body instead of the woman's. But hey, whatever floats your boat.

Sources close to the show tell us, Shaun's porn past has become a sore subject in his marriage and will be addressed on the show.

FYI, Shaun shot the porn the same year he met his wife Sofia -- we're guessing she's not too happy about that.

Nobody photoshops fake nude photos of Kate Upton and gets away with it ... a lesson Sports Illustrated wants to teach a joke website called Celeb Jihad.

The phony photo pheatures a photoshopped pic from an SI shoot with the headline, "Kate Upton Naked Outtake From SI Swimsuit 2014."

It's clearly a fake ... but Sports Illustrated's legal team doesn't care -- they fired off a letter to the site threatening to sue if the post isn't taken down, STAT.

In the letter, the lawyer complains, "One of these photographs has even been airbrushed."

Wouldn't be her first time.

Justin Bieber either has a gigantic dong or cops are being overly cautious ... because the jailhouse video of Bieber taking a leak behind bars has an ENORMOUS black bar.

Miami Beach P.D. just released the video ... shot while Bieber was being booked at the jail.

Nine hours of video has already been released, but the judge wanted special care taken for the video showing Bieber peeing -- the judge wanted to make sure cops covered his junk before releasing it.

Miami Beach cops are having technical difficulties with Justin Bieber's penis ... because it moves too much.

Law enforcement sources tell us ... they fully intend to release more jailhouse videos of the dainty jailbird ... including one showing him peeing into the visible jail toilet. The judge previously ordered cops to blur Bieber's junk before releasing it ... we mean the video.

But there's a problem ... Our sources say they're having trouble obfuscating Bieber's genital area, because he moves as he pees. But they're also having technical issues blurring the video.

We're told the police tech team has been working on the problem non-stop since Tuesday.

The home movie of Marilyn Monroe banging John F. Kennedy and his brother Robert F. Kennedy ... will NOT be going up on the auction block ... TMZ has learned.

The Tulare County Sheriff's Department tells us the auction, which was scheduled to go down tomorrow ... has been canceled because William Castleberry -- the owner of the 8mm film -- settled his $200,000 debt.

Castleberrry owed the $200k for a previous court judgement against him -- and deputies had seiezed the film, along with several other items, to cover the debt.

Check this out ... TMZ Sports recently asked Kansas City Chiefs defensive stud Brandon Flowers to name his Top 3 favorite strip clubs in the country.

But since Brandon says strip clubs are "kind of frowned upon in the NFL," he agreed to tell us about the one he "hears" about the most instead.

So, here's Brandon's official Strip Club Breakdown:

1) Onyx in Atlanta -- "I heard that one's pretty good"

2) Tootsies in Miami -- "I heard Tootsies has the best lobster tail and rice on earth."

3) 11 in Miami -- "It's a new club that's supposed to be pretty good so I'm looking forward to 'hearing' about that one."

The stripper who was fired for taking photos with Katy Perry -- INSIDE A STRIP CLUB -- has moved on to bigger and richer things ... Floyd Mayweather Jr.

The stripper -- Devon -- Instagrammed the photo Wednesday night in Vegas after randomly running into Money May ... who's worth a reported $170 million ... way more than Katy Perry.

TMZ broke the story ... Devon lost her stripper job in Santa Barbara earlier this month after management found out she'd been taking pics with Katy inside the strip club ... where Katy spent thousands of dollars.

TMZ later posted the photos.

BOOB ALERT -- if you didn't already know it was Steven Tyler in this video ... you might think there were two topless chicks cruising around in the back of a Jeep Wrangler like drunk high schoolers.

The person who shot the footage tells TMZ, he honestly believed he was being tailed by a car with two topless women -- until the Jeep got close enough for him to see ... it was actually Steven.

It's unbelievable. You can even hear Steven singing at the top of his lungs.

As if the men's USA Men's hockey team wasn't under enough pressure ... now a major porn company is making things worse -- by offering them 10 YEARS of free porn if they win gold.

... and not just any porn, HD PORN!!!

TMZ Sports has learned ... Brazzers says each player on the squad will get a month-long membership to the hardcore porn site if they beat Canada today ... and if they win the gold-medal game -- they'll get a full 10-year smut pass!

That's a whooooole lotta smut.

Don't screw it up Oshie.

Emma Stone swears that nude selfie making the rounds on the Internet isn't her -- but a new, fully clothed, photo is raising doubt ... for one investigator.

Then again, he could be a total crackpot! Time to find out ...

The naked Emma Stone photo that has blessed the web is -- unfortunately -- NOT EMMA STONE ... so says Emma Stone.

A pic showing a buck-naked red-haired beauty snapping a selfie in the mirror has gone viral ... and damn if it doesn't look a lot like the "Easy A" actress. Several websites have published the photo -- saying it's definitely Stone.

But a source close to Emma is adamant ... it's just not her.

As for who really owns the bare lady parts? She's yet to come forward.

Up to now, Emma's managed to keep her lady bits covered in the movies ... which is why this photo exploded on the Internet.