Bits of ugly fat hanging over the top of hipster jeans when someone squeezes into a size too small.
Most visible from behind, the unsighly bulges can be spotted in almost any pub or night club in the UK on a Friday or Saturday night, and sightings have been reported during the daytime too.
The hipster jeans are usually accompanied by a tight t-shirt which rides up to the narrower part of the body due to the width of the plaps, making them more obvious. The t-shirt may also be a size too small, although this is not always the case.
"I have to keep pulling my t-shirt down to cover my plaps."
by psuedonym April 15, 2005
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to pop like a poppy seed, or, the act of
When your cells get attacked by viruses some of them try to plaps.

Don't make me plaps you.
by wburglett November 13, 2006
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The loud sound heard when preforming intense anal sex. It's the noise that a well lubed anus makes when the penis is smacked flush against it, in deep, fast, and hard penetration.
James: Hey Emma. Want to get some dinner in a bit and some sexy time later?
Emma: I'm not really hunger for food. What I am in the mood for is a good anal dicking right now!
James: Be right there. I'll make that ass talk, baby. >:)
Emma: Plap, plap, plap :P
by HeathenWolf September 08, 2020
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The sound made during incredibly rough sex. Typically associated with bussy, although it is possible with all forms of dicking.
"Ugh, Jake was so tight, dude."
"Plap plap all night?"
"You know it!"
by Headwig April 01, 2020
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The act of gently slapping a mostly flaccid penis upon the forehead, cheek, or other part of the face of another consenting adult.
Todd: “Gee Loadie, I think you’re swell. May I plap you?”
Loadie: “That would be great! I love a good plapping in the morning!”
by Mando Machine June 07, 2021
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The sound on intense anal sex. It's the noise that the anus makes when the penis is smacked flush against it, in deep, fast, and hard penetration.
Zack: Want to get some drinks baby? And maybe later I can plap that ass for you.

Emma: Do we have to get drinks? Why wait for later? :P
by HeathenWolf September 07, 2020
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