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When you slightly apply a thick coat of peanut butter around your penis then gently place saltine crackers and spread them over the tip and bottom of your cock sandwiching them and spread jelly lightly on a girls outter pussy lips .

Thrusting your saltine coated cock inside her mashing the saltines as you sing and chant the peanut butter jelly song thrusting at the pace of the song

If you don't have peanut butter you can always substitute with nutella only you have to sing chocolate rain instead .
Ex. Damn Jenny is so bad I would love to crackerjack her and show her some peanut butter jelly time

Me and Paulina were crackerjacking their were crumbs fucking everywhere
via giphy
by PeanutButterPuppetPal July 02, 2019
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When somebody peeks down a girls shirt at her breasts, its like a little boy opening a box of cracker jacks to find the surprise at the bottom of the box.
Did you notice Alex was cracker-jacking Betsy at lunch today?
by FrYivYdiNO March 11, 2009
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3
The practice of police "jacking up" white people in a black neighborhood.
Cop #1 " Sure is quiet today."

Cop #2 " Yeah. Let's go Cracker Jacking in the projects and kill some time."
by Paddlehands November 03, 2009
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Gather a group of friends around a cracker. Get everyone to fap and cum over it. Last one to cum has to eat the cracker and his buddies' semen.
My bro keeps losing at cracker jacking, not sure if that's good or bad.
by Dutchbag July 13, 2012
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