Bumping and grinding.
No, we're not talking about what goes on inside Paris Hilton's bedroom when Tyler Atkins rolls over there. We're talking about Tom Cruise getting down and dirty on the dance floor!
Anyway. Tom Cruise, Katie Holmes and their pals had few inhibitions at the July 22 "Welcome to America" party the couple threw for Victoria and David Beckham in L.A.
As guests like Demi Moore, Ashton Kutcher, Eva Longoria and Brooke Shields mingled, Jim Carrey pretended to spank girlfriend Jenny McCarthy (really, who wouldn't) as they boogied â€" as Will Smith rapped.
"I can't believe Will can move like that!" marveled Jim Carrey.
That's when Cruise re-enacted one of his famous movie scenes.
At one point, he got on his back and kicked his legs in the air, just like in Risky Business! In real life, however, there were no tighty-whities as the star kept his pants on.
Suri Cruise will thank him for that later.