upper dump
Where you take a dump in the top section of the toilet.
I took a massive upper dump in there!
Upper Michigan Dump Truck
You're fucking a girl from behind. She has her head down UNTIL you stick your thumb in her ass (thumb warmer). The surprise of a thumb going in her ass makes her raise her head (presumably with her mouth open) at which point your buddy takes a shit in her mouth.
Me and my buddy gave Tom's mom an Upper Michigan Dump Truck