This term for fan-based theories and ideas about characters' personalities or other aspects of a story not explicit in canon work dates back to 2007.

A University of Rochester prankster posed as a freshman chemistry professor on the first day of class. Most of the students believed his lecture until the actual professor walked in.

Action movie characters look a bit less sinister when their firearms are replaced with thumbs-up signs.

This parody infomercial for a Westboro Baptist Church dating website demonstrates how love can blossom out of shared hatred and bigotry for those who are different than you.