Pauly D has finally lashed back at Deadmau5 in their ongoing Twitter war ... but the MTV star inadvertently trashed a living legend in the process -- Neil 'Frickin' Diamond.

Pauly obviously saw the comments Deadmau5 made to TMZ ... when he said the "Jersey Shore" star has no talent as a DJ.

Moments ago, Pauly fired back by posting a photo of a Deadmau5 CD in the clearance section of a retail store with a message that read, "Wait I'm Sorry I Cant Hear You @deadmau5 The Clearance Section Is Too Loud."



Nice comeback ... but the pic of the Deadmau5 album is next to "The Very Best of Neil Diamond" ... which happens to be in the same section!!!

Deadmau5 is fair game ... but c'mon Pauly ... leave Neil out of this!!!

Pauly D's a no-talent poser -- at least according to electronic music legend Deadmau5.

The famed mouse-headed DJ was shooting a music video in LA over the weekend -- when we asked if he thought the "Jersey Shore" star had any real DJ talent. Deadmau5 responded, "No, not really."

DM's Pauly D jab comes in the wake of a little Twitter feud last week -- when Mr. Mau5 publicly bashed Pauly's new music video, saying it looked embarrassingly cheap ... "like it cost about $150 to make."

Pauly said he was flattered that DM even deigned to criticize him -- but now, Deadmau5 says the entire embarrassing Internet standoff could have been avoided ... if Pauly did ONE thing differently ... watch the clip.

"Jersey Shore" star Pauly D is entering the liquor business ... and TMZ has learned his new signature drink deal could set him up for life. 

According to our sources, Pauly D is close to announcing his own ready-to-drink cocktail called REMIX ... a series of vodka-based drinks in various flavors. Pauly's drink is meant to target the "pre-game" market -- the kind of drink you have before you go out for the evening. 

Our sources say Pauly D's business partner is none other than David Kanbar, the co-Founder of Skinnygirl Cocktails. We're told the drink was brought to the Wine & Spirits Wholesalers of America convention in Las Vegas early last month and buyers loved it.

Considering Skinnygirl sold for a rumored $120 million ... Pauly D might be retiring before you can say GTL.

DJ Pauly D feared for his safety during a gig last night in South Padre Island and extra security (along with local police) had to be called to control the massive crowd ... TMZ has learned. 

Sources close to Pauly D tell TMZ his team became worried very early on last night that the venue, Louie's Backyard, was not properly equipped to handle the crowd. We're told Pauly D was assured extra security was being brought in to help out. 

According to our sources, the stage Pauly D performed on was supposed to have a few feet of room between it and the fans. But as you can see from the photo above, that didn't happen and the stage became surrounded ... with some fans even trying to climb the stage. 

When it came time to leave, our sources say Pauly D had to be escorted out by about 15 security personnel and police, and he still had his shirt ripped by the mob of fans. 

Calls to the club and the South Padre Island Police Department were not returned.

We've seen how Pauly D handles grenades, but now we know he does with a giant machine gun!

The "Jersey Shore" star visited Fort Irwin, CA last week as part of filming for his upcoming reality show. He spent his time running a training course and even firing off a few rounds.

If the whole DJ thing doesn't work out, maybe Pauly can enlist.

Pauly D is hitting the road with Britney Spears again -- but TMZ has learned this time ... he's bringing his reality show cameras with him. 

The "Jersey Shore" star was Britney's opening act for a few shows back in August -- and one time was even on the receiving end of a lap dance from Brit.

According to our sources, Pauly D will be rejoining Britney for the final show of her tour, taking place December 10 in Puerto Rico. We're told Pauly D will be bringing along the crew from his upcoming spin-off show for MTV to document the whole thing. 

A rep for Pauly D had no comment.

Having a hard time achieving that special shade of orange that Pauly D rocks every week on "The Jersey Shore"? Well the guido himself is lending a hand ... with his own line of tanning products.

Pauly is partnering with Devoted Creations Inc. for his own exclusive line of tanning lotions and sunless products -- which will be sold in high-end professional salons throughout Seaside Heights the world.

According to our sources, Pauly D is a 50/50 partner in the deal ... so he stands to make a boatload of cash ... if all goes to plan.

The products are expected to be released in the next two months.

Kim Kardashian plus DJ Pauly D plus Fashion's Night Out equals an insane crowd that forced cops to shut down DASH NYC last night.

As TMZ first reported, Pauly D agreed to work the party at the Kardashians' store in NYC ... for free ... as a wedding gift to Kim and Kris Humphries.

According to sources inside the store ... NYPD had to step in when the crowd of thousands tried to jump the barricades to get to Pauly as he left the store.

We're told cops made the Kardashian sisters and all their employees leave the store and turn off all the lights -- essentially telling the crazed fans, "You ain't got to go home, but ..."

Pauly D wasn't invited to Kim Kardashian's extravagant wedding -- but that didn't stop him from giving her a gift that is valued at $40,000 ... kind of.

According to our sources, Pauly was approached by Kim to DJ an event at her DASH store in NYC for Fashion's Night Out, the biggest event during Fashion Week.

We're told Pauly agreed to do the gig ... and even agreed to wave his appearance fee as a wedding present. He usually gets $40,000 per appearance.

There's something you don't see on your average wedding registry.

Pauly D has feelings too ... and dude tells us he was DEVASTATED when he learned that honchos at the Hollywood Walk of Fame have banned reality stars from receiving the honor.

The "Jersey Shore" star is in L.A. for the MTV VMAs -- but told us he's still thinking about his family on the East Coast ... who've had to board up their homes and evacuate because of Hurricane Irene.

Still, Pauly insists his hair is "Irene-proof!"

MTV couldn't have its biggest stars miss tomorrow night's Video Music Awards due to the hurricane sweeping the East Coast -- so they chartered a private jet to take "Jersey Shore" stars Snooki, Vinny, Deena and Sammi to Los Angeles ... TMZ has learned.

According to our sources, the foursome flew out last night, avoiding the hurricane before it crippled local airports.

The rest of the cast was off doing events in other parts of the country -- for example ... Pauly D was in Oklahoma DJing, while Jwoww was hosting a party at PURE in Las Vegas. 

Vinny tweeted a pic from the plane, saying, "Had to take the PJ to the #VMAs to beat the storm.East coast you will be fine just chill in and laugh while it passes."