2 definitions by Dominic B.

When you crouch over a sleeping dude's face and punch their testicles, immediatly causing a reflexive situp, so they sit up and their face hits your ass.
Hey, that private over in the LCA just gut atomic sit-upped.
by Dominic B. March 4, 2004
Get the Atomic Sit-Up mug.
Simple -- 1. A dildo in the shape of a chode 2. Some one you hate (Just to let everyone know, I myself invented this word at school in San Francisco during P.E.
Man, that Yishra girl is a real childo
Put the childo away, you fag!
by Dominic B. February 23, 2004
Get the childo mug.