Blade in the shade

My elder son relayed a conversation he had with a Goth girl in his high school. It concerned a student who comes to school every day dressed as a vampire. Long black cape, white makeup, black grief lines from eyes to chin. This vampire has certain routines. In one, he will stand in the shadow of a building, then leap into the light, then back into shadow, over and over.

Noting this recently, my son and Cassandra, his Goth friend, said :

He: Why does he do that all the time?

She: You know, sometimes pale people can't stand too much sun.

He: But . . . he's black.