How about a skull on your head

I sat across from this guy on the train on the way back from the Kawasaki Halloween parade. I asked about the skull and crossbones carved and dyed into his hair, if he'd done it for Halloween. He looked puzzled. He pointed out the skulls on his belt buckle, on each jacket button, and on his cloth camo face mask. Skulls are his thing.

He stared at my hairline and scalp the whole time we talked. "Have you ever thought about doing something interesting with your hair?" he asked.
"I know a really great place."