I keep firefox maximized on my primary monitor. It's maximized whenever I'm using it. So my top three options are "Minimize", "Restore Down", and "Close". The other day I was in a rush and accidentally hit "Restore Down" instead of "Close", and my first (panicked) thought was
To note, I haven't actually fallen for it in ages. It might be "Cool story, bro", but I figured I'd shoot the shit by congratulating WickedFire for ruining "Restore Down" for me forever.