Kris Humphries Guys' Night Out in L.A.
06/16/2011 AT 06:00 AM EDT
Kim Kardashian's fiancé Kris Humphries had a guys' night out at Trousdale Lounge in L.A., where Dr. Dre was also hanging out with a giant entourage. The NBA star stuck to his own table, laughing all night with friends. Says an onlooker: "[He] was on his best behavior."