underweenis

the inside of the elbow. also the elbow pit and/or the anitweenis.

Mark is not only a weenis creeper, he has now also upgraded himself to underweenis creeper.

underweenis by sprattikus April 12, 2011

Underwearist 

Like a nudist but likes to hang out in only their underwear.

Person 1: I'm no nudist, I'm an underwearist.
Person 2: What's that?
Person: I only like to chill in my underwear.

Underwearist by Ilikepi March 19, 2009

underpenis 

the part of the penal shaft below the nutious bagious just forward of the taint. usually useful only during the time a semi or during a full stiffy

I awoke pleasantly by my playmate lightly scratching my underpenis turning my morning semi into a full hard-onwhich I proceeded to fu.......ect....ect........ until the three stooges came on

underpenis by the mac al March 9, 2006

underwees 

One's undergarments.

Such as: Tanktop, Bra, Tighty whities, Boxers, and the infamous Panties.

Woah! Did you see her underwees? They are so sexy!

underwees by Some kid who is weirtd October 30, 2017

underweiser 

beautiful, smart person person.

"wow, she's such an underweiser!!"

underweiser by Hellomynamisjoey May 28, 2009