When did people decide that the word "Gay" also means stupid
I understand alot of religions look down on "gays" and there are people that just think its gross or whatever but When did it become an insult to just use Gay instead of stupid?

I personally damn near hate it when people use the term but I also find myself to be hypocritical whenever I always say I'm against using it as an insult,It's the first thing that comes to mind,And I don't know why.
I guess thats how overused it is