Refers to the 90s sitcom "Seinfeld" when Kramer refused to wear a ribbon for an AIDS Walk event and got harassed and assaulted for it. While being confronted about it by a mob of AIDS Walk participants in an alleyway, he yelled out "This is America!!! I dont have to wear anything I don't wanna wear!!!!!" and then they proceeded to assault him as he was trying to get away from them by climbing up a ladder that was attached to the side of a building.
Basically, the term "AIDS ribboned" is warranted in any situation where a group of people try to compell you to do something for no valid reason other than "everyone else is doing it"
Dude, I got AIDS ribboned at work for not wanting to wear one of those stupid tee shirts for the big company meeting/presentation/luncheon event.
When someone gets shot at a Whataburger
Chris: Dude, did you hear about that guy that got shot at Whataburger.
Jones: Yeah man, I bet when it happened he was like "Man!!!! Whatabullet!!!!"