We use BOC to describe a particularly whorish girl, or a desperately idiotic guy. You can figure out for yourself what the "balls" are and how they could end up on someone's chin. ; )
by Dave O July 21, 2003
Get the bocmug. Balls On Chin - When I guy or girl is giving a BJ, and continuously goes full shaft. The position of the BJ recipient's balls will often slap or rest on the chin of the giver. Depending on the relationship, this can be harmless, almost like a love pat, or it can create an irritation to the chin of the giver.
- Hey did you see that chicks chin?
- No did she have a big zit on it?
- No it looks like she fell and scraped it all up?
- Oh that, yah I did see that, I bet she got her some BOC last night.
- No did she have a big zit on it?
- No it looks like she fell and scraped it all up?
- Oh that, yah I did see that, I bet she got her some BOC last night.
by RoughingTheChicken October 25, 2017
Get the bocmug. Also known as Ball On Chin, a game played by many homosexuals and/or drunk college girls. Can be used as a nickname.
by Kyle Holland August 22, 2006
Get the bocmug. 
by kenny G August 23, 2003
Get the bocmug. Brother of Choice
A man with whom one intentionally creates a healthy, sibling relationship. The BoC may or may not be related to you by blood, marriage or adoption, but nonetheless, is a person with whom one has a close kinship.
A man with whom one intentionally creates a healthy, sibling relationship. The BoC may or may not be related to you by blood, marriage or adoption, but nonetheless, is a person with whom one has a close kinship.
My family of origin is pretty estranged, but my family of choice is tight. I talk to my BoC all the time, and I know he's got my back - and he knows his SoC has his, too.
by smallworld June 6, 2010
Get the BoCmug. 
Get the boc guaimug.