n. the cleavage at the bottom of ur butt and top of ur leg. Usually on girls with bigger butts. Also known as under tuck.
Guy 1: Damn! do u see that chick over there? shes got a nice ass!
Guy 2: Yeah shes got a nice under butt too!
Guy 2: Yeah shes got a nice under butt too!
by katiegurl19512 October 23, 2009
if a girl bra is called over the shoulder bolder holder, then what is a boy's boxers called? under the butt nut hut?
by DeathByBuda December 09, 2011
"all this running is makin my balls flop around!" awwww that sucks, shoulda got an Under-the-butt nut hut
by Kyle Tat June 21, 2008
The girl got so wet you could find her on doppler radar, I had to keep dry in her under the butt nut hut...
by Von Dubz February 22, 2004
by TheHighGuyandTheDoN December 20, 2017