Twitter user @itsthemans posted a photo sourced from 9GAG that for some reason has only now captured the Internet's attention with its ghostly image. The photo shows two people taking a selfie that looks ordinary until you spot a reflection in the glass that is definitely the sign of the devil, or something.
It appears that the reflection of the woman in the glass behind her shows her face instead of the back of her head. This suggests the woman can spin her head around Exorcist style, or has two faces.
Here's a close-up of the satanic forces at work in this photo.
@itsthemans offered no rationale to the photo when he first tweeted it: