I'll Tap Your Bonnet - A mean way to shout at someone who messed you up, and you're

A mean way to shout at someone who messed you up, and you're so mad you hit their car’s hood like it owes you money.

I'll tap your bonnet, you moron, I was stuck in traffic because of you!

You think you're funny? I'll tap your bonnet and you'll wish you were dead!

I'll tap your bonnet until your car looks like a pancake.