The "If you hurt him/her I
will break you" talk given as a warning to a romantic
partner from a concerned
party, usually family or a close friend.
Father of the bride: "I have a shovel and 30 acres of land. If you hurt a hair on her
head, no one
will ever find your body."
Groom: "You don't need to give me a Shovel Talk, sir. I would rather
die than hurt her."