1 definition by pikminion

Top Definition
1. One who is often found publicly masturbating, oftentimes near gross areas, such as sewage treatment plants, or garbage dumps.

2. A cumster found in a dump
You: "Yo dude, did you see that guy jackin' off back there?"

Friend: "Yeah, he was a real dumpcumster"
by pikminion May 31, 2011

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