A slab is a carton of beer, this is regional dialect. Australians haven't the time to say carton when there's beer to be drank, so we say slab. 24 cans, stubbies, etc.
1:Hey mate you comin round for a piss-up Satdy night?
2:Fuck yeah
1:Well make sure you bring a slab!
2:Fuck yeah
1:Well make sure you bring a slab!
by Jimma June 01, 2004