Top Definition
a blowjob given by a woman while being held upside down for a minimum of 3 minutes, preferably done with "small people."
She gave me an upsidumpkin for so long she passed out.

Dude... she started choking because i made her attempt to swallow during my intense upsidumpkin.
by B to the lunt to the Frawg July 10, 2008
5 Words related to Upsidumpkin

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