At the end of my last ever gig with my originals sludge metal band, someone asked us to play Millionaire by Queens Of The Stone Age. At this point we were half packed away plus we don't know how to play the song plus we don't do covers. Plus we were set up two whole tones too low (the song has lots of open string based riffs). Plus we had to get off the stage so the headliner could set up. Apparently none of those excuses were good enough and we were unreasonable.