Beating off while sitting on the toilet taking a shit, usually done to save time.
hold on, I need to go dumpsterbate
by Doctor Frog January 14, 2008
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The act of turning on the shower, then proceeded by sitting on the toilet and mastuerbating
"What we're you doing in the bathroom that took you like 2 hours?" "Dumpsterbating"
by Motodylan January 18, 2015
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