Reverse Half-and-Half

Reverse half-and-half is a term for a sexual act in which a couple has penis-in-vagina sex, finishing the act with fellatio and ejaculation into the female partner's mouth. This sex act is a variation on the act called half-and-half, where the female partner performs fellatio prior to sexual intercourse.

This term's origins are unknown, but it was added to Urban Dictionary in 2003.