I had an interview a few days ago and it went horribly... I completely butchered it. And I have no idea why I was such a bumbling mess.
I forget everything I had prepared and al the research on the company I’d done. I seemed to lose the ability to read my own notes and form coherent sentences. When asked why I believe I’m the ideal candidate I stuttered something along the lines of “I think, uh, well I’m... uh... I’m fun’ ... FUN?! 
It’s my dream job; a company I’d been looking to get into a foot in for years (but there was never an opening), a job that’s perfect and what I can do for a lot better pay, closer to my house, fantastic insentives...
I don’t even have the excuse that I lack interview experience either, normally I do really well but this time something went horrifically wrong. Just remembering the whole thing is making me cringe! If I get the job I will be highly surprised!
AIBU to ask you to share some interview-gone-wrong stories?