|1.||mississippi mud puddle|
while having anal sex with your partner, you proceed to urinate inside his/her butthole. Followed by removal of the penis and lying on the ground (preferably a solid and easy to clean surface) your partner still containing the urine inside them proceeds to deficate on your face.
"oh my jenny, whats that awful stain on your new carpet?"
"Oh thats just last nights mississippi mud puddle, we got a little wasted"