Have You Found Yourself Saying "Bananas" Lately?

I've found myself using the word "bananas" as slang for crazy or over the top lately. I'm assuming I picked it up somewhere, maybe online? Since I caught myself saying it, I've noticed it being typed/said quite a bit.

Now, this may be a case of "you always see what you look for." But I can't help but feel that somehow "bananas" is part of some language virus that's spreading. Like douchebag.