His parents were superheroes who were killed by a villain, thus he hates heroes and thinks they're posers/idiots.

The guy being punched is a hero in training.

- So, sir, your nut went to the back of your hips, took a left to go in your kneecap, continued up to your toes and ended up on the ground as a collectible item.
- What about the other one ?
- Oh, it's dead.