1 definition by BillyBob the Hick

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 18, 2009