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Sometimes used for blaze up (smoke).

Like it if you want, some people say it.

Most of the time used on statuses for stuff like aim, msn, whatever.
Dave's status: AFK... b up
b up by Felonblazer March 1, 2009
about to leave
" b up bxxd i finna hit you later"
B Up by #imher April 3, 2021
A short form of the word "break up". Often used on messaging over electronics because of the laziness of a person.
luke: dude i can't believe that she b-up with me
robert: don't cry. it's weird.
b-up by RYANNN. April 28, 2007
behind you but up. Used mostly when talking face to face with someone.
The poster is B-up you.
B-up by TheSunnysXD October 25, 2022
B Up A. Refers to Modern Warfare (MW2, COD4, World at War). It means to "give up" or "tap out" and back out of the lobby before the game starts. You can tell someone to "Bupa" (sounds like "Boopa") if you want them to leave.
Example 1:"Man, you guys have no skill- you keep using your noob tubes". "Noob tubes? These are pro pipes. B UP A"

Example 2: "I don't noob tube, I bro-pipe!"
B up A by Noob Tuber March 31, 2010

cas-b-up 

Short for casual button up shirt. A style that can be worn for most occasions.
Her: You look nice today.

Him: It’s just a normal cas-b-up.
cas-b-up by TheDon27 April 21, 2018
More from Urban Dictionary

piddlefart

verb. To waste time doing nothing.
Instead of doing my homework, I decided to piddlefart around for two hours.
piddlefart by Rene April 25, 2005
Word of the Day on October 9, 2026
anyone who succeeds in disgracing/over indulging themselves in the throws of clubland
28 hours and 4 clubs later, gurning for england but still refusing to go home - a total wrongun!!
wrongun by bevvers March 21, 2007
Word of the Day on October 8, 2026

square grouper

Nickname given to bales of marijuana thrown overboard or out of airplanes. Origin is reportedly from members of the US Coast Guard in the area of Southern Florida.
"Base we've got some square groupers floating outside of Miami harbor."
square grouper by slipsheet November 6, 2004
Word of the Day on October 7, 2026
A girl who does ballet and only talks about ballet. Her schedule is filled with dance classes which does not allow her to do any other activity.
"Hey, do you know that girl Sally?"

"Yeah, she's kind of annoying. All she ever talks about it ballet."

"Wow, what a Bunhead."

"Hey Sally, you want to hang out this weekend?"
"I can't, I have dance."
"You're such a Bunhead."

"Yeah... I know."
Bunhead by Jen00 October 24, 2014
Word of the Day on October 6, 2026
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