When rushing to the toilet with a diarrhea like bowel movement ready to go and finally releasing the moment your bum touches the toilet seat.
Keith: "Where are you going in such a hurry?"

Donovan: "I'm going for the sloppy dunk, out of my way!"
by OdinBerry October 4, 2013
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Someone is laying down and begins to push out a shit. As soon as the poop begins to crown you take your dick and jam the shit back into their ass.
Jenny started to shit so i took my cock and Sloppy Slam Dunked it back inside of her.
by Lil Rizz March 25, 2011
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