underback

The area between the lower back and the ass crack. Common location for 'bitch tatts'.

She's got a tribal on her underback.

underback by tairui August 24, 2008

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

The Undertaker 

When you throw your partner off Hell in a Cell, and they plummet 16 feet through an announcer's table.

"I gave my GF a sexy The Undertaker last night."
"Is she okay?"

The Undertaker by ahmahm June 23, 2017

Underfucked 

sexually deprived

1. Yo look how hard she's hitting on him... she's definitely underfucked!

2. That guy is completely underfucked. He just desperately asked her out again after she told him to fuck off for the third time...

Underfucked by Stephen and friends June 26, 2010

underfuckingstand 

When you don't understand something and you are super pissed.
When you don't feel like saying "fucking understand"
When fucking understand just doesn't quite display the needed emotion.

"I don't underfuckingstand why your acting like this"

underfuckingstand by Desiree Aho January 9, 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

underdecking 

conspiring against an authority figure to take synchronized shits underneath said authority figure's deck. Usually performed in groups of two to five people. In extreme cases, shit burritos are fashioned with paper towels and left to be found.

Oh, no. Have you seen the kids? I hope their not underdecking us again!

underdecking by underdecked July 2, 2009