A way of provoking deep unhappiness in a person by cutting a crucial amount of their hair against their own will. Tends to be worse for girls, and may be a particularly sensitive way of provoking irrevocable pain and hate in them. A completely legal way of violating another person's body for the purpose of cruelty or revenge.
GIRL 1: Have you thought of what are you going to do that bitch who stole your boyfriend?
GIRL 2: Yes. I think a big nasty plan of capillocide will do it.
GIRL 1: Of what?