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 young woman who likes to go out and get wasted. Usually ends up very sloppy with gross hair.
"Yo, that sloppy hoe over there with the sloppy flow... What a mess"
"Yea, she's a B alright."
by Bryoncé June 23, 2016
A "B" is a good friend or Homie that you always laugh with. It can be used in any setting but was originated on Grateful Dead tour in the early 90's. Can also be used to describe when you are very tired and worn out. It can also be described as indentifying someone that has the same name....such as "Where's Jasmin?"....which Jasmin? "Jazzy B"
"Im Tired B"......"Where are all the "B"'s at?"....."meet us after the show, all the "B's" will be there
by The B's February 10, 2010
Abbrevition for blood. but its a way of endearing somebody or adressing 'em. It definitely don't mean "boo" ,whoever the person was that wrote that.
Nah, B you wildin'.
Ayo chill, B.
by cute4rmday1 August 21, 2005
A Mandarin (or Chinese if you don't pay attention in class) word meaning pussy. Also has other meanings:

Ass
Butt
Pussy
Booty
Pigu

It is pronounced as "bee". It was invented because the letter "B" looks like a woman's booty or ass, and it is easier and quicker to say it. Also seen in other curse related Mandarin phrases such as SB (shabee, or stupid) and Caonimabi (fuck your mother's pussy).
那头奶牛的B真是又圆又大!真性感!
by cabbage bird March 31, 2015
Bagging.
A good way to call out a friend who is trying to bag, often on facebook.
Boy writes on Girl's facebook : HEY ! how've you been. I miss you we should def hang out some time, looking good in the default btw.

Your comment: b.
by Ze Bagger April 23, 2011
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