What is Mississippi Mud-thumping?
1.
When you go to bed after taking a shit and over the course of the night, you scratch your asshole and you end up with shit on your finger.
"Hey last night I went Mississippi mud-thumping and I didn't even know it!"
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1.
The stall that is left open between two guys who are pissing in a bathroom. A violation of this rule, when there are ample stalls makes ..