slapjacking 

To jack off slowly not with the purpose of ejaculating but with the purpose of getting primed up for your significant other to walk in and finish.

Shook was slapjacking in bed waiting for his girl to come in. She never walked in and the slapjack went to a fulljack.

slapjacking by Chaitdeezy August 8, 2016

Slapdicking 

To figuratively knock one another's dicks around playfully as to stray from a primary focal objective

After the game coach tells the players that if they weren't always slapdicking around they might actually win a game. S'go guys

Slapdicking by Balls Sydon October 29, 2013

Starjacking 

Using the free Starbucks coffee house wireless internet access without going inside the store to order coffee.

I drove my car to Starbucks, pulled into a parking spot up front, kept the motor running, whipped out my laptop and did some starjacking. I emailed all my friends for free!

Starjacking by Robin McCasland June 12, 2007

Flapjacking 

A male with an erection, lies on his back while a second erect male inserts the penis of the first into his anus then lies back. A third male inserts the penis of the second into his anus and lies back forming a stack. A three man stack is known as a short stack, A stack of four or more is known as a full stack. Full stacking has the added benefit of asphyxiating the bottom participants. The flapjacking experience can be enhanced by using maple syrup as lube and having each participant massage the balls of the person above.

Mark, Mike, Jason and Joel were planning a full stack flapjacking session last night but Joel didn't show, so the three had to make do with a short stack.

Flapjacking by crankbait July 27, 2012

Flapjacking 

Motorboating a girls ass.

That girls ass was so round and fat that I was flapjacking that shit all night long!!

Flapjacking by jjstl April 27, 2010

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