When you come up with something that you think is cool and funny and you think you're the first person to think of it, but it turns out many people have thought of it long before you.
Person 1: Bro! I have a crazy idea! Imagine Frankenstein but he's a prankster, and his name is PRANKENSTEIN. Why has no one ever though of this before?
Person 2: That joke has been used several times already by many other people.
Person 1: Fuck. I'll call this phenomenon "The Prankenstein Effect"
when you're holding up your phone and making faces at it, as though you are taking a selfie, but you're really taking a picture of the person across from you or the wall or anything else that seems interesting but you don't want to be caught dead taking a picture of.
This action is often made more convincing by wiggling the eyebrows or opening the mouth, to pretend you're trying to get a Snapchat filter to work.
FRIEND A: "Did you just take a stealthie of me?"
FRIEND B (turning phone around): "no I was just using snapchat's new filter, see?"