crack em Share definition Flag When one snorts a line of cocaine, the term 'crack em' is used to define this action it is slang Australian term for performing this action. ' hey mate lets go crack em'' you cracked em before you came for sure mate' crack em by Meeeee8 April 3, 2016 0 0 Get merch Get the crack em mug. Buy Now — $32.95 See more merch