deep butt, or deep butting, is defined by the act of taking an oversized object up the rectum. coined after a discussion on the gag reflex of the anus.
by Nodnarbbackwards October 18, 2008

After the Saints won the Super Bowl, Reggie Bush celebrated by Going Balls Deep Butt Good on Kim Kardashian's phat ass!
by MOCO & P-Phat May 28, 2010
