I'll tell you when you're older - A grown-up’s way of saying they don’t want to explain someth

A grown-up’s way of saying they don’t want to explain something and you’re probably not smart enough to get it

My dad said that when I asked why he kept yelling at the TV and he was already late for work.

My cousin said that when I asked why her dog hated me and she didn’t want to admit it.

My neighbor said that when I asked why his lawn looked like a war zone and he was too busy eating cereal.