A hard head makes a soft ass - A hard head makes a soft ass means you're too dumb to take a

A hard head makes a soft ass means you're too dumb to take advice and you'll end up getting beaten up.

My kid won't stop being a smartass. He's gonna get beaten up. A hard head makes a soft ass.

My coworker won't stop making mistakes. He's gonna feel the pain. A hard head makes a soft ass.

My friend won't stop messing up. He's gonna be the joke. A hard head makes a soft ass.