flapjacking 

to roll down the windows of your car and let your boobs hang out and flap in the wind.

emma was flapjacking last night.

flapjacking by ashannah March 3, 2010

Flapjacking 

"flapjacking!" (v.) - to engage in sexual interaction with another. (2) Usually follows cupcaking and/or cheesecaking.

I was flapjacking all night long with this FINE ass girl named mahlet!

Flapjacking by Mahlet, Sable December 8, 2006

FlapJacking 

Bobbing your legs back and forrth causinfg the excess fat of your thighs to smack together in the hopes of achieving "discreet," public masturbation

Dude I was totally flapjacking in that business meeting today

FlapJacking by levaus January 7, 2014

Human Flapjacking

Two people sexually pressing their bodies together with syrup between them (butter optional) while masturbating each other.

Bill: You want Aunt Jemima or Mrs Buttersworth?
Bill 2: For what?
Bill: I thought we were going to try Human Flapjacking tonight?
Bill 2: Oh shit, that’s right. Get some Buttersworth. Speaking of, don’t forget some butter.
Bill: Margarine ok?
Bill 2: No, Bill, it is not. I have standards.

Human Flapjacking by Wolf Edmunds December 7, 2019

Flapjacking 

The act of flipping a womans breast up, accompanied by the word "Flap!", then slapping the breast sideways while saying "Jack!".

I saw Albert flapjacking this bitch on tape, and I could see the shockwave in slow motion.

Flapjacking by Doodwashere January 22, 2009

Flapjacking 

The act created by breasts slapping together resulting from not wearing a bra.

Damn girl, you're flapjacking again.

Flapjacking by AlexaaMmeghan June 12, 2011

Flapjacking 

To repeatedly flap from your belly to your back, while being naked in bed.

Jones: Do you know what Flapjacking is, in your bed?
Diesel: I don't wanna know.

Flapjacking by flyinghorses January 3, 2011