Top Definition
After receiving fellatio while dumping in a portapotty, cum in the girls eyes temporarily blinding her. Then, exit the portapotty and simply push it down a hill tumbling end over end.

i.e. Location, location, location
i got bored with getting blumpkins so I upgraded to the tumbling portablumpkin.
by Banana Suit May 18, 2009
7 Words related to tumbling portablumpkin

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