at least you can't see the hedgehogs bare scalp beneath his ridiculous haircut

The difference is this. A porcupine’s needle pierces you, you might have a small chance of infection.

With Jim’s wispy spines of hair, you know for a fact you at the very least have Hep C.

It's weird he'd go with such a creepy haircut considering the fist thing he makes fun of somebody for is their hair.