undergash 

A large, lumbering beast indigenous to the Midwestern United States. Enjoys preying on Jagermeister and cans of jalepeno cheese deep. Frequent visitor to an underground cult known as "Ars" - although no one ever knows he's there. Name not related to UK slang word for "vagina" - so don't even ask

Undergash - who's he again?

undergash by undergash August 23, 2003

The Underachievers 

A rap group from BROOKLYN (Flatbush) that makes the absolute dopest shit. It's a duo, Issa Dash and AK. Their lyrics are insightful and smart, yet hard as fuck. Their most famous song is Herb Shuttles. The video for it is on youtube , lots of people turning up, bad bitches, and pounds of the dankest weed you'll ever see.

On a side note, they are part of the "Beast Coast" movement including Pro Era and Flatbush Zombies, and countless other new groups.

I just listened to Herb Shuttles by The Underachievers , and got stoned through the speakers.

The Underachievers by TheBeastOfTheCoast September 16, 2013

raving underpass

The act of dancing underneath a concrete structure, to any given beat. Usual participants are gothic warriors and princesses.

Buddy and Joe were raving underpass I-95 over the weekend.

raving underpass by WebstersBest June 8, 2016

underpaste

The uncomfortable feeling when the skin of the male genitalia is stuck together in the underwear.

A girl in my class saw me as I tried to fix my underpaste.

underpaste by LoLo1234 August 1, 2008

Urban Dictionary Underachiever 

Person who thinks stringing together a few words and making a gay ass acronym or loser with no friends who submits someones name counts as a valid submission

Editing the submissions is not as fun as it used to be as too mant idiots are putting stupid acronyms or names of people they either love, hate, know, idolize ,etc,etc....FUCK OFF TROLL!!!

Why don't all you Urban Dictionary Underachievers (UDU's) go start a website called wefuckinlosers.com and troll your gay ass heads off....shiteaters!!

Urban Dictionary Underachiever by Lunicus September 18, 2012

undershirt 

1. what manuel neuer never fails to wear on pitch.

2. it is the teasingly thin cotton shirt usually seen worn by usually hot-the-ones-you-fancy footballers underneath their jerseys.

3. it is the very thing that most fans(girls) hate to see once the footballers pull off the shirts after the match.

4. it can be used as a test to see if a girl is straight or not. nuff said!

...after a germany game...

fangirl 1: hey look manu is pulling off his shirt! urgghh what's that thing he's wearing?

fangirl 2: why it's the undershirt!

fangirl 1: but he usually wears long-sleeved. i don't get why is it even necessary...

fangirl 2: yeah manu is mean. he needs to start attending the fanservice lesson.

fangirl 1: he so does. undershirt must be banned!

...both fangirl 1 and fangirl 2 started to appreciate schweini...

undershirt by inlovewithneuer September 2, 2010

underachiever 

Person who fails to achieve his or her potential. Used often when refering to students.

My kid is an underachiever. He's not an idiot though.

underachiever by jakub777 December 9, 2008