1. Word commonly used in reference to women who pride themselves on their unusual propensity to consume large quantities of jizz within a very short period of time
2. Also used to describe women with a "dick is dick" mentality.
Guy 2: Go stick your trash in that hoe maddy she's a cum dumpster. Just watch out and make sure you don't get herpes shes fucked the entire school
Girl 2: After I found out he'd been with that cum dumpster I couldn't stand the sight of him any more. She's been pounded by more men than Debbie Dallas.
Girl 1: Wow your pissed
Girl 2: He'll get his when he's broke and she leaves him for the next fool with a little bank to support her.