What is Slapjack?
1.
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.
See
2.
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*
See
3.
1. Complete waste of space.
2. One who lacks intelligence.
3. An urban red-neck.
Good golly Billy-Bob you is one hellava slapjack.