What would you do? Last Friday at 2:00 AM my friend in Vancouver, BC was awakened by loud talking

[ohiosmith]

and laughing in his driveway. Upon checking he discovered that the noise was in fact coming from the open window of his 26 year old son Tyler's basement bedroom. Looking in the window my friend saw that his son was on his bed nude with two completely naked women smoking a joint. Tyler who aspires to be a professional extreme sports athlete is a part time waiter at the local Keg restaurant. He is now in his fifth year of a two year community college certification program. He lives at my friends house rent free and contributes nothing to household expenses. My friend wants to throw him out. My friends wife does not. What would you do?