Stands for Simultaneous Mutual Companionable back-clap, and is used to describe the warmly-affable gesture that two super-sociable best friends (usually two cool dudes, but hot chicks occasionally share one, too, or a guy and a sturdy-figured cutie) perform to signify an agreement, encourage each other to begin a boring/difficult/disgusting task, start off on a stroll together, etc. It simply involves exchanging a huge beaming ear-to-ear grin, then putting an arm around each other's shoulders and landing a good-natured thump on the back to indicate their hearty positive feelings and congratulatory appreciation for each other.
Freckle-faced southern tomboy: Ah always loves to help da local farmer-boys wif their chores and play volleyball wif dem, and my fahvorite part is the s. m. c. back-claps dat dey always smilingly gives me throughout the day... makes a gal feel purrty and appreciated!
by QuacksO March 8, 2017
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The moment while running naked and your thighs collide and adhere to one another. This feels like the world's strongest velcro bringing your nude stride to an abrupt stop.

This is a collision that causes thunder, friction, chaos, and disorientation. This collision will make it seem like your thighs have started a civil war in am attempt to assassinate you with "Death By Stairs".
I have reached a new level of fat. I was running up the stairs with no clothes on. My thighs caught each other and almost tripped me. It wasn't a clap, the bitches straight tried to murder me. It was "The Clap Back"!
by BigAlUnicornPrincess May 18, 2021
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A ridiculous statement uneducated millennials use instead of the correct term(s) . For example comeback , retaliates, responds etc.
by Schoey100 January 7, 2023
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Putting your hands together for somebody that put their hands together for you.
Neither of them had done anything impressive, but the other one decided to clap back at the first one. You hardly ever see/hear somebody clap just one time then sthat was it.
by Solid Mantis May 23, 2021
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When you fuck her and her ass can clap back with out you having to move . Can hear her ass clapping back to you
Damn dog her asss was a load she could clap back on it for days
by Gstaxxx February 8, 2019
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You know how in the early 2000's there were a bunch of jokes about parents using their kids vernacular unironically and it was corny and sad. That's what the whole western world is now.
Honestly, I would feel worse about the clap back is I didn't know it was coming from some fat lesbian or a child Murder who's future consists of nothing more then cleaning up after filthy cripples without ever actually doing anything for anyone in their worthless lives.
by Hym Iam December 4, 2020
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