upper dumpkin 

When your taking a shit in the tank of a toilet(upper deck) while getting a blow job(blumpkin).

I never knew I could get an upper dumpkin in the church bathroom.

upper dumpkin by Halfmoonsports November 27, 2013

upper dumpling

when a man sits on the top of a toilet with his feet on the seat and a woman licks his ass while he strokes his cock-and-balls.

Baby, last night when u gave me that upper dumpling, did u taste corn?

upper dumpling by Mols the truth July 8, 2007