shit up

verb2

1. •
   (slang, vulgar) To cover or smear with excrement.

   • To entice the screw into the best position to be shitted up the trick was to ask them to open a door on the landing. Keith was in his cell, conned the screw to the top of the stairs and whooshhhhhh!!! — 2006
2. •
   (slang, vulgar) To mess up; to ruin.

   • They just go on shitting up the world and feel no responsibility for their character or anything they do. — 1991