That one hatless head was so distraught over being the only head sans headgear that it said; "You know, if I can't have a hat, I'll just not be a head. I'll be a crab claw instead. How would you like that?"
So far Crabclaw Head has cracked 756 skulls, and counting. But among them, not a single hat. That head has the worst luck; I feel bad for it.