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."
An IT specialist who refuses to help and makes you feel stupid on purpose.
Paul is surly, he won't help me fix my computer's error and keeps insisting it is "operator error".