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2. Flap Jacking
A tandem masturbatory technique in which the participants lock arms at the elbows whilst gripping the shaft of their penises. They then flap elbows like a bird in synchronization to most efficiently share the work of jacking.
I jerked off with my friend, but it wasn't gay because we were flap jacking.
1. flap jacking
when lying naked on ones bed and jumping on to your stomach then to your back resembling flipping a flapjack
I was flap jacking so hard my bed broke!
3. Flap Jacking
Jacking off onto pancakes and then eating it
"What did you have for breakfast, Jimmy?"

"I did a little flap jacking"

"deeeeeelicious"
4. flap jacking
where you masturbate and then ejaculate into your palm and then consume it. the move must replicate the motion of pill popping in Requiem For A Dream.
Despite common misconception flap jacking does not indicate homosexuality.
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