the strange aftertaste in your mouth after having snorted a few lines of coke. Taste is a little bitter(not too bad) and leaves your mouth a little numb.
hey man; pass me a piece or gum or some beer, I've got some serious coke mouth
its self explanatory. a person who often has come in their mouths/likes to dribble or gargle it after oral sex.
However, it's most often used to describe sycophants or jerks, not people who actually play with come after sex or during. (but that can change if we try!)
yo, did you see boris sucking up to professor E?
dont look now but here comes comemouth!
Boris: Hey dudes, whats up?
*drools white*
Boris: O look! A rainbow!
normal people: Comemouth!