To own repeatedly.
EJ hack balls on his science project
by Marzec June 18, 2009
1 more definition
A Hackball is usually a person absent from morals and is frequently seen enjoying breakfast with a can of Hackenberg
That Ger fella is nothin only a Hackball, I seen him down the canal with a tray of Hack!!!
by Deedong July 23, 2009