When you’re having sex with a partner and you RKO them mid orgasm.
Kristy was squirting everywhere so I preformed the B.C. Flapjack to intesify her orgasm!
by Left_Nut September 11, 2018
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A woman with exceptionally large aerolla's.
Check out the nips on Flapjack Fannie!
by Admiral7Awesome August 6, 2018
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Any unusual sexual act between two consenting young people that only occurs because they both know that they're not supposed to be sleeping together. A common euphemism that went around schools in southern England in the late 1980s.
"Tracey and that there Sandra did the marmalade flapjack in the bathroom at Wayne's party and they had to replace the shower head after."

"I didn't even really need a babysitter anymore, and I proved it when me and Julie ended up doing the marmalade flapjack on the stairs ten minutes before my mum and dad got home. She still got paid and all!"
by Jack The Bodiless January 24, 2023
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To kill, or to die. Can also be flapjacked, flapjack’d.
He got flapjacked fr!
Im flapjacking right now.
by Flapjackbutdead October 16, 2022
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When a guy hits girls butt and it makes that clapping sound.
When jay Flapjacked me I, my booty cheered. I cant wait for my next Flapjacking.
by Marko main May 12, 2015
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Best suited for women that have had a child. Their breast will sometimes be flattened and rest on their chest like a couple of flapjacks or pancakes.

Verb: when you place the palm of your hand between a woman's breasts and shake it side to side as fast you can, causing a flapping or slapping sound.
I was flapjacking my wife for our anniversary, that's why I'm walking with a limp.
by Woodwacker May 16, 2008
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