User blog comment:Delnum/Why is it creepy?/@comment-24486291-20140316023403

Manniquins, clowns, dolls, and skeletons all fall under a category in which their expression cannot truly be read.

We find things whose true intentions are hidden creepy. In ordinary situations, when someone or something is clearly looking at us with an intent to kill, or it is perfectly obvious that they mean to harm, we use the "flight" in our "fight-or-flight response." However, when this expression is unreadable, our "FoF Response" becomes confused and cannot truly decide as immediately as we should. We cannot determine directly if we should recognize it as a threat or leave it be. This feeling makes us uncomfortable, and this uncomfortable feeling is "creepiness."