dump cunt is typically used to define a stupid & annoying female who should be cummed on and then abandonedon the side of the road. hints the word dump cunt, dump meaning cum and cunt meaning pussy.
A whore who has hooked up with multiple guys in a single day to the point of guys essentially using her cunt as a dumpster. Often guys who have dumped their loads in these whores frequently experience symptoms such as intense remorse immediately after as well as dwelling on whether or not he has unknowingly received sloppy seconds.
Joe: Yo I hooked up with Sabrina last night at that party.
Matt: Sabrina!?!? you know she hooked up with 2 dudes before going to that party.
Joe: That fucking cunt dumpster!