Top definition
To mess up,To do something wrong that offens one ,catches off gaurd,does it that makes them mad!
The teacher told Reggie to get out of her class,because Reggie was interupting her. So Reggie told the teacher,"Man you poo'in-Up"!
by Nikiya June 30, 2004
Get the mug
Get a Poo'in-Up! mug for your coworker Riley.