Okay prepare for rant.
I absolutely hate when people misuse the word "gay." Gay is the a simile for homoloveual, not a simile for stupid.
For example, people will say "Wow, that word is so gay." Since when was a word capable of having the ability to like the same love as his/her self? Another is "School is gay." When ever someone says that, I always ask them "Why didn't anyone tell me that school likes the same love as its self?" I've been really offended about this lately for no reason, but for a good reason. I really hope I'm not the only one who thinks that the misuse of gay is wrong, and stupid.
TL;DR: Using gay for stupid is offending to people, so stop it.
Same thing goes for "friend"