General: nightmare fuel
An image of a disturbing or freaky design that might haunt someone in their sleep. Nightmare fuel can be subtle or overt. All it has to do is supply the creepy mental imagery and ideas - the viewer's mind provides the spark.
The tag scary or similar does not refer to this
- If the post has you saying "Ah, spooky ghost" it is not nightmare fuel.
- If the post has you saying "Oh god what the f@#$!" or "Why would you draw that?" then it should be tagged nightmare fuel.