The product of a sexual climax between two partners preforming anal sex. It is usually a mixture of the recipients sweat and the givers semen. Various other substances could be involved in it's creation. In order to be a booty spit, the fluid must come out at pressure.
Dude, me and my girl got it on last night! Did you make her booty spit?
by fatherflannel March 03, 2011