b is short for bag, the verb. bag is used to mean that someone is going to hook up with someone else. so when someone is trying to bag someone else, as in they are flirting or starting to make moves, one would make his/her right hand into a b (thumb straight up, fingers curled behind curled pointer finger) behind the person who is trying to bag. in addition, someone could say "b" or type it on facebook, text it, etc.
Example 1: Jack goes over to Anna and says, "Nice shirt," in a flirty way.
Aaron goes behind Jack and puts up a b with his hand.
People laugh

Example 2: On facebook, Jamie writes "wish i could've seen you today :(" on Ryan's wall.
Adrian comments on the wallpost saying "b"
by an0nnn111 June 19, 2011
a blunt, usually referring to a marijuana blunt, in which the smoker disposes of the tobacco inside the blunt and replaces it with weed. a "b" is usually shared between a few friends, as it holds a significant amount of marijuana.
A joint? Fuck that, I'm rollin' up a B
by SEMOdrew February 22, 2008
A single-frame flash by StrawberryClock showing the letter "B" which led to all ClockCrew members saying it over and over annoyingly.
RupeeClock: Oh my god that flash was BBBBB!
StrawberryClock: Yeah I know, B is so cool!
by NSGamer March 31, 2006
b is a term that should be strictly used as a nickname for the name "Bianca" nothing else, use it in any other way and you will be shanked by a girl named Bianca
Waddup B? (ianca)
by Bianca Buccheri October 17, 2011
Abbreviation for butt.
T has a rly nice b.
by Fearghas June 07, 2010
a flash movie by strawberry clock can be found on newgrounds.com this movie was the start of the infamous clock crew. it is a single frame animation containing a single letter B, times new roman, red.
B is the best movie ever
by iceblockclock February 27, 2008
A generally annoying yellow teeth neck brace wearing son of a bitch who sticks her dumb little nose into other peoples business. A waste of everybodys time, that has a hugeeee wideee dirty clam for boys to cup.
"B, piss off"

"B, get your dumb yellow teeth out of here"

"B man if you dont shut up im going to crank your neck brace off"

" Stopp cupping my B"
by B hater June 04, 2009
Slang for 8 ball or ball in the drug exchange world.

"What you want?"

"A b of soft and a half b of hard"
by MonicaN December 23, 2007

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