At first I thought these were ads meant to run in consumer magazines, in which case I think they'd be great.
But they're actually ceiling stickers.
I'm assuming these ceiling stickers are meant for the ceiling at a dentist's office. Where they're sure to scare patients -- scare them not for forgetting to use Listerine, but scare them about what manner of torture the dentist has planned. I can't imagine a dentist actually using these in his/her office.
The only other public place I can think of where one reclines and stares at the ceiling is while getting one's hair washed in a hair salon. So these stickers must be meant for dentists' offices, right?
Source: Scary Ideas