Film Actors and Year?

I remember a film from the mid 90s where two guys are trying to get into the Playboy Mansion and get into wacky antics in the process. I think they won a contest or something but they lived far away. They are being chased by the police at one point and hide in a sewer pipe. They try to break into a studio, and one of them tells of a crazy party, and makes a reference to oral sex. There is a scene where they are in the grotto of the Mansion and are swimming. That was toward the end.