bust (someone's) balls

break (someone's) balls & break (someone's) stones & bust (someone's) balls & bust (someone's) stones

1. Sl. to wreck or ruin (someone); to overwork someone; to overwhelm someone. (Potentially offensive. Use only with discretion.) •

The boss acts like he's trying to break everybody's balls all the time.

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No need to break my balls. I'll do it!

2. Sl. to kid or tease (someone). •

Don't sweat what I said—I was just bustin' balls.

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Hey, relax, he didn't mean it. He was just breakin' your stones!