JB
Jail Bait. A girl or boy who is underage.
Back off dude. She's JB.
by Lauren Gio December 28, 2005
jb
1) Short for jail bait.
2) A person who is almost, yet barely the age of consent.
3) Pornography which usually features girls 13-17 taking pictures of themselves naked in front of mirrors.
4) Not to be confused with cp.
"I fapped to some jb on the net. Little did I know it was my little sister."
by "A" June 14, 2008
JB
an acronym for the phrase Jiant Bitch
Your such a Jb
by darkmegastorm May 20, 2014
A jb is a strange fellow. at times he acts like he doesn't care, but deep down you know he does. Gets offened easily but thats just all part of the act. likes to play fight wheater he will admit it or not. thinks highly of other people but never of himself. very smart and inteligent. trustworthy. loyal, would never cheat on you. makes you stay up late thinking about him. its hard to mad at him. makes you laugh when you didn't even want to smile. gives very sincere compliments. loves curly hair. most amazing person ever.
j.b. is what you always wanted
by allyoueverwanted February 06, 2010
J.b is an acronym for the derogatory term "jewbag", it can be used as both a noun and a adjective. Usually J.b is used almost in code when people are around who may be offended.
"That fucking mako is such a j.b., he won't eat out anywhere unless it's really cheap".
by mighty oak September 10, 2010
To take something from a friend in an unintentional or absentminded way, most often regarding inexpensive or commonplace items.
Hey man, did you J.B. my lighter?
by quotedeen January 17, 2009
JB
The initials of a ton of people some awesome, some... not so much. The awesome include Jack Barakat, Jess Bowen, James Bond, and many others.

The not-so-awesome include Justin Bieber, the Jonas Brothers, and many others.
Person: Eh yo JB!
Justin Bieber: What?
Person: God, not you. JB!
Jonas brothers: What?
Person: NOT YOU. JB!
Jack Barakat: Yeah?
Person: *sighs* finally
by coldashype July 10, 2011

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