Rubbing one's penis vigorously back and forth in an ass crack, while not actually inserting it in the anus. Also known as the asstric bypass.
She was on her period and her butthole smelled, so I just did the old Appalachian Mundungus.
by Thomas Frick March 24, 2008
The Urban Dictionary Mug
One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.Buy the mug