S4, E19: Riley realizes that she hasn't met any of Ross's friends and decides to throw a cocktail party so she can get to know them. Ross confronts Ben about his not-so-secret feelings for Riley and tells him to back off; in fact, don't even come to the party. Not one to take orders, Ben crashes the party, but the night quickly takes a wrong turn when the boys get into a fist fight and a very drunk Tucker spills a few more secrets.