upper decker double deluxe blumpkin 

It's the act of the man taking a dump in the tank of the toilet while the woman takes a dump in the bowl while giving the man a blowjob while a third party performs a golden shower.

Dude, last night Stacey and Dave and I did the upper decker double deluxe Blumpkin, it was gnarly!

upper decker double deluxe blumpkin by Reedski March 27, 2015

Upperdecker double blumpkin deluxe

One person sits on the toilet while the other person stands above him. The person sitting is giving a blowjob to the standing person while both are taking a shit.

I walked in the public restroom and caught my roommate and some stranger doing the upperdecker double blumpkin deluxe.

Upperdecker double blumpkin deluxe by JScrub619 July 4, 2016