When your nose touches the ceiling !
The sock under my bed. (I don't remember where I heard it. Can't claim ownership.)
Bed buglars.
Because hardly any of them know how to dance.
He had her.
A: Five after one.
Elephino
Punch him in the nose.
Boo-gers
Blu-Tac a euro to the ceiling.
You tape bread to the ceiling.
David Cop-a-feel
A. Their criminal record