To reach such a level of laziness that nothing, not even the need to move can motivate him/her. They are so lazy they use a bed pan rather then walk to the bath room.
He will never meet us there, he is bed pan lazy!
A polite way of telling someone that things are more difficult because someone got in your way. (Peter being a slang term used to refer to male genitalia; screwed)
I would have had this project done but I got petered.