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!
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.
When a male or koala bear decides to blow rasberries from the anal juices that have been inserted during sexual intercourse when boredom has gotten a hold of them.
Greg: Im bored of your small penis Johnny how about a double buttdecker deluxe, it will be like blowing pretty bubbles
Double Triple Bossy Deluxe on a raft, 4x4 animal style, extra shingles with a shimmy and a squeeze, light axle grease; make it cry, burn it, and let it swim
Bubble Bass' order in the Spongebob episode "Pickles". AKA the ultimate/cringiest food to ever exist.
"I'll take a Double Triple Bossy Deluxe on a raft, 4x4 animal style, extra shingles with a shimmy and a squeeze, light axle grease; make it cry, burn it, and let it swim." - Bubble Bass