When you want to make someone look like a homosexual. Say it when they are turned away from you and they will most likely turn around no matter their sexuality. When he realizes what you have done, you will either share a jolly laugh together or he will punch you in the face.

This is done mainly by low-end middle school kids or general attention-seekers.

Briefly, "the realization that each random passerby is living a life as vivid and complex as your own." Originally from the Dictionary of Obscure Sorrows, which has a lot more beautiful neologism definitions like this you might enjoy.