1 definition by Donny D (D=Down Syndrome)

Mumpkin

The act of masturbating while pooping. Similar to a blumpkin, but not quite.

Guy- dude you were in there for a while, i mean damn!

Guy2- yeah, i was busy getting a mumpkin!

Guy- Understandable

by Donny D (D=Down Syndrome) June 1, 2011