The opposite of a flower child.
Someone who believes that violence solves basically everything. One who couldn't care less about the environment, nature, peace, etc. Generally very bitchy and pessimistic.
Person 1: "I swear I'm going to kill that bitch with an axe if she fucking talks about saving those stupid, selfish whales one. more. time."
Person 2: "Stop being such a weed child... damn."