What is the greatest comeback to an insult you have ever heard?

One time my dad & brother were arguing & my brother was shooting tons of aggressive insults at my dad. My dads response was just silence. No words.

Theres something very unique that happens to an angry person when you just let them resonate in their anger without getting any reaction from you at all. Instant regret looms upon them.

To this day still the greatest comeback I’ve witnessed of all time, silence is really golden.