/s/Illusions includes pareidolia: the incorrect perception of a stimulus as an object, pattern, or meaning to the observer, such as seeing shapes in clouds, faces in inanimate objects or abstract patterns - or hearing voices in static or hidden messages in music.

Open your mind, but don't let your brains fall out.

That photo is fine if you have a BigFoot-print fetish. I prefer the photos of genitals that are naturally exposed or "pop up" in nature.