Underflip 

Performing a twirling maneouver during sexual activity.

Those two homeless men performed an underflip last night on the steps of the public library.

Underflip by Dirty Sanchez June 5, 2004

underwiper 

A girl/woman who wipes her ass under her pussy (or top to bottom) thus exposing her pussy and all pubic region to fecal matter.

Holy shit, I was going to eat out J-Lo last night, but when I got down there her shit stank like diarrhea. Bitch is an underwiper.

underwiper by slole1 April 21, 2009

underslicer

When the urethral opening of male genitalia is elongated and extends down the head of the penis. due to this sick deformed abomination of a penis, any fluid secreted will simply drip down like a leaking faucet.

Carson: " dude what the fuck's wrong with your dick?"

Nick: "I thought everyone had one like this..."

Carson: "No you sick bastard! You have an underslicer!"

underslicer by anuscrab December 26, 2011

Underfluffies 

The fluffy feathers underneath the tails of birbs, covering their butts.

I showed you my underfluffies please respond

Underfluffies by ProjectOWL August 2, 2018

underfletched 

A VERY cool person who plays video games

Hey Jack! Wanna Play Some Fortnite?
Sure! Lets Invite UnderFletched

underfletched by wag1pffting April 27, 2019

underhipster 

Someone who doesn't wear underwear.

Sue is an underhipster because she hates panty lines.

underhipster by Skylar01 November 23, 2014

underlit 

Not as drunk, high or entertained as you would like to be.

1) When arriving late to a party I feel underlit.
2) These cheap drugs make me feel underlit.
3) Compared to other clubs this music is underlit.

underlit by RareNintendoGames April 4, 2017