[backs away slowly]
By any chance was that a Peanut Butter, Chocolate Syrup and Brains sandwich?
This moring, did you shuffle or shamble while moaning? (May not be a definative test...)
Do you look at people now and think, "That would be good in a stew?" (Again, may not be definative...)
If these answers are yes, then I'm heading for my bunker to wait out the Zombie Apocolypse. Actually, I'm heading there anyway because I'm hungry now. I'm not sure why.