When poo comes out in little audible pellets.
Pause the movie, I'm away to make some Plopcorn.
by Timmy Plop October 27, 2018
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1. When you try to sneak out a little gas and end up releasing a small turd with it.

2. When you sit down on the toilet and fart out a little turd that splashes back at you.
1. "Dude, I gotta go change my pants - I just released a Plopcorn Fart!"

2. "Guess I better shower, I just got sprayed by a Plopcorn Fart."
by Urban-aight January 29, 2011
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"Exploding" cereal that doesn't "do its thing".
I found a still-sealed bag of Jiffy-Pop among some old stuff that my neighbor gave me from clearing out her attic, but it was so old and dried out that it turned out to be just "plopcorn"... I ground it up and used it for birdseed.
by QuacksO August 10, 2018
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