Short for body odour, usually used when someone is sweaty and beginning to smell e.g. a locker room.
by SwirlyCupcakes July 23, 2018
Short for "black out", B.O. is a term used to describe when a person is so drunk that they wake up the next morning with no recollection of what they did the night before
by ozioffcl July 08, 2018
by Ahawk75 August 05, 2009