A person who enters your flat/house as a regular person and leaves an urban legend as they flee the scene of an alcohol induced 'accident' leaving your couch, floor, walls and somehow TV covered in shit!
Bringing a whole new meaning to the phrase couch surfing.
Don't invite Steve to the flatwarming party.... I've heard he is a shoucher
My first date went great until his two booty call girls showed up and offered him a threesome right in front of me! He left the date to be with them, what a slouche!