a movie that is quite popular with grade-schoolers. You will usually be asked whether or not you have seen this movie, to which you must respond yes and then proceed to make up random scenes you saw in it. Otherwise, as the title suggests, you are gay.
person 1: Have you seen the movie Gay People Say No? *snicker*
person 2: In fact, yes I have. Do you remember the car chase scene where the hero jumps through the windshield, shoots the driver, crashes the car off the cliff, and jumps onto a helicopter at the last minute, steals it, and destroys an entire car dealership with it and then shoots at random people?
person 1: walks away
A popular term used most commonly by Elementary and Middle Schoolers to try and make fun of someone because they are "gay." Basically someone would walk up to you and say "Hey have you watched the movie 'Gay People Say No'?" If you say no then you are "gay" because the tittle "says so." If you answer yes then you better have a good follow up comment. (See below for an awesome one!) You can alternatively respond with "Cool Story Bro" and watch the other person shut up.
Person 1: Hey have you ever watched the movie "Gay People Say No"?
Person 2: Yeah, I downloaded that off of ThePirateBay like two weeks ago! It was AWESOME!! My favorite part was when that one dude took down the enemy helicopter with a throwing knife!