"digs" is used as a substitute for nigs
It is a covert way of referring to black people.
Often used by white guys when talking amongst themselves about blacks.
Term originated in Southern California.
Person 1: Hey, I just got tickets to a Queen concert!
Person 2: Triple digs, man!
Person 3: Which row?
Person 1: Front!
Person 2 and 3: Quadruple digs!