Party Poopster

When a great night is being had by all except one, who is so utterly wankered that he/she has to be taken home early for fear that they may shit themselves

Steve "Urrrgh, I don't remember anything from last night"

John "I'm not surprised, you'd polished off a whole bottle of vodka by 10.30pm and Pete had to carry you home as you looked like you were going to lose faecal continence again"

Pete "Yeah, what a Party Poopster, I was all set to pull that bird with the massive rack, you git"