When a couple is cuddling and the small spoon (the one being cuddled) has diarrhea on the big spoon (the one doing the cuddling) making what appears to be a mud puddle in between their cuddle.
Ben: My girlfriend chose to be the big spoon after our Mexican dinner and I accidentally Muddled her.
Teddy: Damn, was the puddle smooth or chunky
Ben: Slightly chunky...