To rack the balls before the start of a pool game.
Before the start of a game of pool, Biff Lambert always says , "you rack em, i crack em."
by Donald Cowboy Cerrone February 7, 2018
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'
by Meeeee8 December 25, 2015