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!!

by Lunicus September 18, 2012

underbeneath

The practice of sporting your collar tucked in, typically in crime-riddled urban areas. The polar opposite of the collar pop. Made popular by Atlanta rappers "Tha THC Boyz" (They*Hidin*Collaz.)

Damn, son...You wanna get shot?! You better tuck that collar underbeneath!!!

by Loloforeal June 12, 2007

underappreciator

one who does not give true value to a certain item of extreme value

Jasen did not give give my trade in it's proper value and blamed it on John, he is such an underappreciator!!!!

by undervaluer July 16, 2013

under the pump

Under the pump - for being very busy, feeling the pressure (like that caused when using a pump to inflate), almost at bursting point.

How are ya, mate?

'Far out mate, been under the pump!'

by BVB1 February 14, 2019

Under-carriage munching

A term coined by a cool Aussie chick used to describe when koalas go downtown on each other.

‘Hey Davey, koalas are cute but most of them have Chlamydia. Probably from all their under-carriage munching.’
‘It sounds fucking sickening.’
‘It is fucking sickening Davey, it is.’

by milliesofmelbourne June 20, 2020

Under 21 Tax

The difference between the amount of money given to an over 21 year old person by an under 21 year old person to buy alcohol and the actual cost of the alcohol, kept by the over 21 year old person as a payment for the service.

Under-age person: Hey, this bottle cost $17 and I gave you $20 - where's my change?
Over-age person: Sorry... Under 21 Tax.

by jonukas May 18, 2007

uncertainty principle

1. States the position and momentum of a particle cannot be simultaneously measured with arbitrarily high precision. This is a crucial concept that is a part of quantum mechanics

2. The modern-day version states to never judge a girl's looks from a distance greater than or equal to 50 feet.

The uncertainty principle seems very straightforward.

Man, I was drunk last night at the party and the uncertainty principle totally slipped my mind. I swore he looked like a girl.

by PVD October 5, 2004