Mom and son or sister and brother

I would Love a story about a mother who ballbusts her son, especially if it's after he did something bad so it's to discipline him but she secretly likes it

I would also love a story about a sister and brother, especially if she busts his balls as a prank, or he takes it to prove that something, like that he's stronger and inevitably he collapses whining about his balls and his sister is just laughing the whole time