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
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"
Friend: "Yeah, he was a real dumpcumster"
by pikminion June 1, 2011