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

underbugger 

A person or annoyance that gets under ones skin and bugs them.

That squeaky door is a real underbugger. I think that new girl is an underbugger, she wont shut up.

underbugger by Christopher Evans August 2, 2008

underburner 

A giant, slow-growing, epic-ly painful zit. The kind that you can't pop successfully for days even though it resembles a small volcano on your face, because its source is so deep. Often used as part of the phrase "massive underburner."

This term was coined by Alice Thomas in Columbus Ohio, in approximately 1993.

I have a giant underburner on my chin.

I wish I could pop this dang underburner!

Look at this massive underburner!

underburner by DoobyMaryJ November 5, 2010

Undercunterated 

When you underestimate how much of a cunt someone is

Wow, I undercunterated her!

How did you undercunterate that bitch?!

Undercunterated by Daker June 16, 2015

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

underbutter 

The fluidy paste from under your chode

"Pick at your chode underneath the table and smear the underbutter on the chips and cards, you can use it against them later." "Aw dude, it smells like underbutter in here!" "How would you like my underbutter all over your face bitch?"

underbutter by [e-mail] December 17, 2006

undercunnder 

1) To present yourself as something you are not in order to convince someone that you are not a Pig.

I was so stonned I almost didnt see the undercunnder cop comming.

undercunnder by MBC March 31, 2003