Any time you use the word "gay" to describe something you don't like. It is based on the tv edumercials staring Hillary Duff. The commercials are intended to stop this use of the word "gay" which is in itself a good cause, but the commercials are so ridiculous that they have become a joke on their own.
guy 1: Hey did you hear that Mr. Garcia is collecting our current events TODAY??? That's so gay!