Have You Ever Sent Anything Back?

I've never sent anything back because i wasn't prepared to eat it. I have, onoccasion, occasionally sent things back because i wanted it cooked more or maybe it wasn't hot enough - but not because i didn't like it. And if i really didn't like i'd probably just leave some of it on the plate and not order it again. Can you think of any memorable meals you've had? Anything that stands out? Anything that sticks in your memory as being especially good?