underthenutbuthut

male breif undergarment.

by sky May 8, 2003

undertainter

when a guy is fingering a girl and then pulls out, makes a fist, punches her in the taint, lifts her up with his fist in her vagina, and then slams her to the ground.

"Dude, that girl was being so damn rough, i had to give her an undertainter."

by Paco de meah January 21, 2007

underchick

When a guy dates a girl who is not as good looking as he is.

You can't bring Sarah to the party, bro. Don't underchick.

by lastknownname April 25, 2014