Yawning or possessed by the devil?

Hey... did I see the same expression in "Scary movie"?

I've been very lucky to succeed to take this pic
First I was lucky because the cam was in reach of my free arm. Second I was lucky because I was expecting a completely different pic.
Ronnie was sleeping with her mouth put deep in the bend of my elbow, so I was looking for a more placid pic... but I ended up in taking a pic from "The exorcist".

Yawning or possessed by the devil?