You're missing a great opportunity to mop his balls with Mr. Clean whenever you see them. Also, if he gets to strut around the house naked, eat like a pig, cook his famous durian haggis with sauerkraut and Bleu cheese or play the same polka song a hundred times in a row, so do you.

Time to get a spray bottle and use some negative reenforcement. Maybe fill the bottle with pee?

Your friend is a disgusting, inconsiderate asshole.

Time to call the nuthouse stat!

Not cleaning it up crosses the line

If you can't beat 'em, join 'em. Let him step in your mess!

Invite his mother over for a suprise dinner

Invite your pregant sister over to projectile vomit all over the inside of his car

dealing with a roommate like that... what a heavy load to handle.

that scumbag would be homeless