Saying you're going to kill him is no better than he is, and can probably get you in just as much trouble.
He's autistic. I know people who know his family. Just because someone's autistic doesn't mean they're nice.
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"In my world it's a place of patterns and feel. In my world it's a haven for what is real. It's my world, nobody can steal it, but people like me, we live in the shadows." -Donna Williams