Origin of Phrases - B
Bust your balls
Meaning: To harass with the intent to break one's spirit.
Example: When I ask you if you settled that dispute with the IRS, I am not just trying to bust your balls. I am trying to help.
Origin: There is a way to castrate a calf, instead of cutting off the Testicles you break them. To "bust your balls" is to turn them from a bull into a steer. Properly directed harassment can have a similar effect on humans.