Definitions by BKC HERT

Pre-K Ass 

When an adult of at least 22 years of age has the ass of a five year old

Erin to Heidi: Ugh, my butt looks SO big today gurrrrllll
Heidi to Erin: Gurl, mine doesn't. I got a Pre-K Ass!

Pre-K Ass by BKC HERT January 30, 2009