1. The act of when a man is having sexual intercourse (or oral sex) with a woman, he fakes like he is about to "cum to fruition" by pulling out and setting up to finish on her face. Instead, he forces a huge and slimy dump (diarrhea in some cases) on her face as a surprise.
2. When a woman is eating out a guy, midway through he begins to fake as if he is getting really turned on and tells her to continue with the action further. As she does, he forces out a wet dump into her mouth and on her face surprising her in the act.
Ex. Sally, "So How was that guy you meet at the bar last night?"
Amanda, "Terrible! He gave me a mud pie surprise! I am never talking to him again."
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