Someone who comes to your home uninvited, only to have them fall asleep randomly during odd times. For example while playing a board game,
watching a movie,
watching a movie in a movie theater, during a conversation, during a five minute drive to an IHOP, while looking up superdickery, while
eating a sandwich, while on the toilet, so much so that you can play ring toss on a cup on his head.
Their sleeping is so bad that trying to wake them becomes impossible and results in literally throwing them out the door.