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.

by Chaitdeezy August 8, 2016

Bombay Slapjack

The act of defecation upon your partner's tits,then.......TITWANK!!!

"Fancy coming back to mine for a Bombay Slapjack?!?!"

by Rorymotion May 10, 2009

SlapJack

A game in which somebody yells "SLAPJACK!" and brutally slaps someone until their organs shut down.

Drew got his ass slapjacked so hard he fucking died.

by Reckewww01 January 26, 2019

slapjack

Slapping one's own ass while jacking off to their own lower body.

The man slapjacked himself.

by ChloeV124 November 30, 2016

snapjacking

The challenge of attempting to ejaculate within the 10 second window of a snapchat.

Before opening snapchat, he gathered all of his supplies in order to attempt a successful snapjacking session.

by z.x.c.v.b.n.m.a.s.d.f.g.h.j.k. April 20, 2014

Slapjack

A game similar to the classic punch buggy. Every time one sees a yellow vehicle, they slap the person next to them and say "slapjack!"

Originated from Oshawa.

-yellow car drives past-

Girl: SLAPJACK! *slaps friend*

by BillyBob the Hick July 17, 2009

Slapjack

A "homeless" person who lives on the street.The one with no teeth,dirty as hell,and talks to himself outloud while making no sense at all.Sleeps on a piece of cardboard

In downtown San Francisco,you will see many "slapjacks" on the street during the "wee" hours of the morning.

by Robo93 November 27, 2006