Is it okay to have disturbing thoughts?

I want to shove my hands into a person's chest, snap their ribs, rip their heart out and eat it. hmm.. I'm in a really good mood.. These thoughts make me feel all warm and fuzzy inside. It's a burning lust for evilness, and it makes me oh so happy. I would never ACTUALLY do it, but the thought makes me smile. What do you think of that? Do we all have these barbaric minds but choose to ignore anything that isn't civilized?