underchips 

The undesirable, topping-less chips at the bottom of a plate of nachos.

I asked the waiter for the check when the underchips were all that remained of my Nachos Grande.

underchips by Lakshmi Parekh October 17, 2008

Underchunk 

1. verb- To puke in another person's butt.
2. noun- The debris created through the act of puking in another person's butt.

1. Hey, you want to underchunk tonight?
2. OHHH!!! You got underchunk all over the bed!

Underchunk by zekedafreke January 20, 2009

Undercup 

When a female reaches between a man's legs from behind to grasp his cock and balls.

As I was leaving the party I was surprised to receive an undercup while in mid-step. Unfortunately, when I turned around she was built like an offensive lineman so I ran away feeling violated.

Undercup by dat.bro March 8, 2011

undercompensating 

Being modest, cheap, or the opposite of overcompensating. Using distractions to avoid undue attention to pockets that look like they got the mumps.

Guy 1:"why do women always go for underachievers, slackers, and losers?"

Guy 2: "They must know something we don't know about guys who are undercompensating..."

Guy1: "The worlds just not fair. Why can't we have it all?"

undercompensating by HermanMelville January 3, 2014

undercumference

The distance from your clenched butthole to the edge of your ball sac

She was not impressed with my undercumference as it was coated with from under cheese

undercumference by Tranquist1899 September 11, 2015

Undercup 

Where by a group of Lads grab a young skets breasts from under the top and often leading to a bukaki.

" Hes only gone for undercup and she loves it."

Undercup by Slaps December 7, 2009

Undercupping 

When a female, usually large breasted, intentionally or unintentionally wears a bra with a cup size larger than her own breasts. This effect will become teasingly apparent when coupled with the low cut and/or sleeveless blouse, spaghetti strap top or summer dress. As a witness to this undercupping effect, one will have the opportunity to witness top boob and possibly side boob depending on how a woman positions herself and her breasts fail to entirely fill her bra cups and thus remain exposed to the extent that the bra allows.

1. My friend and I were in the downtown park yesterday at lunchtime and were the happy witnesses to some great undercupping action as the women sat to eat their lunch or bent down to "check" their shoes in front of us.

2. While I was on the treadmill last Thursday I couldn't help but notice the serious undercupping action going on with the girl immediately to my left as she bounced and bobbed on her machine.

Undercupping by -<[squinkie]>- June 6, 2013