I (and many others) dislike it when people make Terrence *evil* as opposed to just a stupid bully. There's a difference. Terrence doesn't like Mac and he probably hates Bloo but there's been no indication in the series that he "beats the crap" out of Mac, like tons of people like to put in their fics.
He pushes him around, he gives him wedgies, he's the stomp-on-a-sandcastle type, but he doesn't pound and pound until the blood comes. Got it?
GOD I HATE THAT. -_-