underyonder 

The female sex Oregon. It's not a vagina that's only the part of a sex organ.

When are you going to let me have some of that underyonder

underyonder by NTZ Claw October 31, 2023

Underbender 

While standing behind an unsuspecting fella, who is preferably deep in conversation or thought, one would reach a hand through his legs upward, grabbing the top of the belt buckle and in one swift, smooth and forceful motion pull down and back and watch the poor gent either smash their face in the ground or complete a front flip. Be prepared to run.

Geoffrey had been egotistically running his mouth all day, so when I noticed he was taking a few pictures with his haggard harem, I swooped in and administered an unforgettable underbender, on film.

Underbender by mdawsonj July 19, 2014

under yonder 

A word used in reference to female parts. This word was introduced in a kik chat room by Jay.

I licked her under yonder.

under yonder by Sullygirl July 18, 2017

underbunder 

British slang for Underwear.

Used when you are talking about someone you either don't like or you're best friends with them and you're just messing about.

Example:
"Omg, we can all see his fat underbunder from here, I am uncomfortable."

Example:
"Get your fat underbunder off that chair!"

Example:
"Please take you and your assed underbunder out of here."

underbunder by igorpleaseshutup November 9, 2020