Adj. Pertaining to one who is a slut, a
cunt, a douche bag, or a variety of the three. Sluntbag is usually used towards females who cheat on their boyfriends, but can be used on males who give the same courtesy to their girlfriends by
fucking their best
friends.
Devin tried to sleep with Linda when he's already
dating Becky. What a sluntbag move.
Perhaps if Sarah wasn't such a sluntbag, she would have been better off with her ex
Josh.