Party All The Time

"Pawn Stars" badass Austin "Chumlee" Russell made one hell of a birthday negotiation at a nightclub this weekend -- You give me 40 bottles of Cristal ... I'll give you $11 THOUSAND DOLLARS!!

Chumlee rolled into Push nightclub in Tunica, Mississippi on Saturday night -- and decided he wanted to treat the entire place to some fancy champagne ... so he did.

Chum -- who was hanging with "Pawn Stars" bodyguard Antoine -- racked up a total bill of $9,558 ... and then dropped a $2,000 tip ... for a grand total of $11,558.

Wonder what the Old Man would say ...

Beyonce celebrated her 30th birthday just like every other expectant mom -- ballin' her face off on a massive yacht in Venice, Italy!

B and Jay-Z held court aboard the super luxurious yacht "Odessa" ... for her big 3-0 celebration -- which included visits from celeb pals Gwyneth Paltrow and Erykah Badu.

Beyonce was seen on-deck checking out her not-yet-visible baby bump.

Prince Harry's dancing might suck ... but he's one helluva diver -- as proven by this video of the royal spare partying his face off and jumping into a pool last weekend.

Harry was dancing -- and not well -- on the edge of a pool inside a Croatian nightclub when he decided to take the plunge. Another club goer jumped in right after him ... but Harry got out and started dancing again ... like nothing happened.

Deena from "Jersey Shore" took a break from beating up the beat at the guido clubs to work the pole at West Hollywood's most popular gay bar the Abbey last night.

The "blast in a glass" was spotted partying with "Dancing with the Stars" regulars Mark Ballas, Derek Hough, Lacey Schwimmer, as well as new contestants Rob Kardashian and Kristin Cavallari.

Retired MLB player Sammy Sosa proved he's still a baller by partying and throwing cash into a belly dancer's skirt at Lavo in NYC on Sunday.

Jwoww, in all her natural beauty, played the role of host at PURE nightclub in Las Vegas last night.

Floyd Mayweather claims the only reason he parties his face off at nightclubs ... and passes out booze ... and flashes money ... and otherwise acts like a complete a-hole ... is JUST to promote his fights.

It's all in legal docs filed by Pretty Boy Floyd as part of his ongoing war with Manny Pacquiao -- this time, Mayweather responded to allegations that he was irresponsibly partying around the country instead of attending a deposition.

In the docs, obtained by TMZ, Mayweather claims the nightclubbing is "not random acts of partying, but calculated promotional events designed to appeal to his fan base and maintain his public presence."

Mayweather acknowledges that "many people hate him" because of his "Money" Mayweather alter ego -- but explains, "If even those who dislike him are willing to pay for the privilege of watching the fight, he is more profitable."

Mayweather also declares that he "does not drink, smoke or take drugs."

The fighter insists he MUST participate in these "promotional activities" -- and that's one of the reasons why he did not appear to be deposed on any of the dates requested by Pacquiao's camp.

So, we gotta ask ...

Vanilla Ice received the ultimate token of appreciation this month from the temperamental crowd at the Gathering of the Juggalos -- a 5-foot mega-bong -- and the rapper RIPPED it on stage.

Someone in the crowd actually passed it to 'Nilla in the middle of his performance last week -- and not wanting to upset the fickle crowd, Ice humbly accepted.

Lindsay Lohan looked exhausted as she left the Kim Kardashian wedding in Montecito, CA last night -- while her 48-year-old mother Dina still had plenty of energy, yukking it up in the back seat with a friend (Mel B, is that you?).

Lil Wayne was attacked with pepper spray last night in Canada -- after some jerk snuck into his afterparty and put the excruciating substance in the air ducts.

It all went down last night at a club in Montreal called La Mouche -- where Weezy was hosting the afterparty for his show.

We're told some jackass snuck into the back room and unleashed the chemical into the ventilation system -- and everyone had to be evacuated, including Weezy.

"Teen Mom" baby daddy Gary Shirley went on a MARATHON strip club session earlier this summer ... TMZ has learned -- dropping $5,000 on 11 hours of boob-filled butt-flossy awesomeness.

We're told Gary made it rain at a 24-hour gentlemen's club in Miami -- unleashing a constant stream of cash from 1AM to 12PM. Count 'em. ELEVEN HOURS OF STRIPPERS.

According to sources inside the club, Gary kicked off the evening in the VIP area -- and then moved the action somewhere more private ... the champagne room.

Rihanna partied her FACE OFF in Barbados ... while remaining half-naked the whole time. Warning: the following images are titillating and depressing -- because you're not there.

Rihanna REALLY got into the Kadooment Day spirit this weekend ... by crotch-grinding the bejesus out of another half-naked lady in Barbados yesterday ... and fortunately for all mankind, it was captured on tape.

Lindsay Lohan went out again in Malibu last night with pals Paris and Nicky Hilton and she just couldn't stand it -- no, really ... she fell down.

Lindsay blamed her little trip on the paps, posting this on her Twitter page:

The boys let off a little steam at the Clermont Lounge in Atlanta where Biggs nearly lost his pants while dancing on top of the bar.

The only time we want to see Jason Biggs with his pants off ... is when there are baked goods involved.

As TMZ first reported, the Hoff and GF Hayley got into it in their hotel room at the Wynn ... to the point where Hayley called for security.

But the couple put on their best face and made their way down to Blush ... where the Hoff celebrated his 59th birthday ... as if nothing ever happened.

Earlier in the day, Hoff and Hayley hung out by the pool where he put on his "Baywatch" best, much to the delight of the crowd.