wet, sloppy shit that squirts as soon as you relax your butt cheeks
That fucking hobo got ass batter all over the floor!
by Da Nasty One November 11, 2004
Smegma-like, lathering build up in one's butt crack due to high temperatures and sweating, especially after a workout and/or manual labor. Dingleberries may or may not be present.
Hey, the dog is licking the assbatter out of my underwear again!
by sireland October 28, 2007