Justin Bieber celebrated his 21st year on this planet with an insane bash at the Omni nightclub in Las Vegas Sunday (March 15). But the celebration reportedly ended early for one partygoer in particular.

Actor David Arquette allegedly became visibly sloppy and began to mouth off about the birthday boy as the event moved to Bieber's rooftop suite — fittingly dubbed the "Hangover Suite" — at the Nobu Hotel.

Then, as one witness tells Page Six, "Justin heard what David had been saying, and threw him out of his suite with the help of a friend, because they didn’t have security up there. Somehow David managed to get back in and rushed at Bieber to take him out. There was a confrontation, then other people got in the way to separate them. David was thrown out again, this time for good.”

Two strikes and you're out, David!

The bash otherwise went off without a hitch. Comedy Central's most recent Roast-ee reportedly received $500,000 to host the event. Paid to go to your own birthday party? Now that's one sweet deal.

Happy belated birthday, Justin! It seems like only yesterday you and that floppy hair were shaking to "Baby" on our television screens.

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