"Busting his chops"

Posted by Word Camel on July 24, 2003

In Brooklyn and other places in the NYC area it is customary to refer to giving someone a hard time as "busting his chops". I've also heard it used to indicate teasing "Hey, I'm just busting your chops".

Anyway, I'm wondering where it comes from and especially what the "chops" are. Any ideas?