Black on Blue's definitions
when you obviously can't host for a sexual encounter because your family members/partners are in the same house as you, most likely for long periods of time. This also signifies that you don't have your own place and feel like driving
person 1: i can host, you can come over now
person 2: cool omw
someone walks in the house
person 1: sry change of plans can't host
person 2: wtf im already halfway down the road!!
person 2: cool omw
someone walks in the house
person 1: sry change of plans can't host
person 2: wtf im already halfway down the road!!
by Black on Blue January 23, 2015
Get the can't host mug.Back Up Fuck. When your sex partner is away and your really desperate you get a back up fuck to keep you "company".
Girl : Hey Guy my BF is out of town for the week and im really horny you wanna be my B.U.F. ?
Guy: Sure just be naked when I get there
Guy: Sure just be naked when I get there
by Black on Blue February 23, 2011
Get the B.U.F. mug.