Dunderbutt 

a stupid loser butt head

Damian is such a dunderbutt

Dunderbutt by ED10297 November 23, 2009

dudebutt

the exposure of man ass.

"yo andrew, how you like this dudebutt?"
(andrew turns and enjoys the dudebutt)

dudebutt by redbushbill May 27, 2009

underbutt 

The distinct area off the bottom that is at the lower part of the gluteus maximus. Usually the underbutt is highly regarded in terms of attractiveness. Often the underbutt is discovered at the beach when womens bikinis do not cover the whole area of the bottom.

Amy has an excellent underbutt

underbutt by bicbiq December 28, 2008

underbuttoned 

when a man leaves too many buttons undone so chest hair is sticking out

alberto: what do you think, am i under buttoned?
rosita: you could make a wig with all the chest hair i can see - when not wearing a tie, two buttons or more is underbuttoned

underbuttoned by desmian March 21, 2022

Dundercunt 

When someone is so mentaly impared that they visibly and auditorly show signs of being a complete cunt

Bob was being such a dundercunt last night we had to put him to sleep

Dundercunt by Cunt pubes December 31, 2018

dunderbunny

Someone that just can't seem to do anything right. So much so that everything they touch turns to shit. See also clod or dimwit.

Byron: Everything he touches just falls apart. It's almost like the poor dolt is cursed.
Tobias: yup. He's a dunderbunny like you read about. Stupid hamfist!

dunderbunny by dublpump August 7, 2010

Underbutt 

When girls wear short shorts and you can see the bottom part of their butts.

Damn did you Ashley's shorts? Her underbutt is completely exposed, and it caused me to bust an instant nut.

Underbutt by Tinnysman July 11, 2018