"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.
and quadruple digs refers to the best fucking thing in the entire world.
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!