Birth Control Boobs- When a girl with relatively small boobs starts taking birth control and them thangs inflate like hot air balloons. Nothin better than some grade A birth control boobies. Any guy that says otherwise is a fudge packer.
"DAMN, that skinny bitch used to have -A cups and now she's a C!"
"I'm tellin you man she's got those prime BCB's!"
"Ahh, what a country we live in"
"Yes sir"
"I'm tellin you man she's got those prime BCB's!"
"Ahh, what a country we live in"
"Yes sir"
by The Griz Brotherhood August 27, 2009
Get the BCBmug. 
BCB is the technical term that describes a young female that particularly loves the BBC (big black cock). Although they exist primarily in sluttier cases, nearly any female could be thrown into this category. Specifically, the acronym stands for Black Cock Blower.
by skeetmastafunk July 6, 2010
Get the BCBmug. by BC Bitch February 9, 2008
Get the BCBmug. by jacksn December 2, 2015
Get the BCBmug. Also known as Butt Crack Boy. This acronym originated from a conversation a girl was having with a guy as they were talking about being paid for services. A miraculous idea popped into the guy's head as he tried putting money down her pants. As amazed as she was by his stupidity, she decided to establish a nickname for him known as BCB. The female version of the name is called BCG, for Butt Crack Girl.
Person 1: "Are you taking a dump?"
Person 2: "Yeah, I've lost 3 pounds already!"
Person 1: "You're such a BCB."
Person 2: "Yeah, I've lost 3 pounds already!"
Person 1: "You're such a BCB."
by Samosa Lover May 14, 2014
Get the BCBmug.