A = Addlepated numskull, aka a customer
M = Me
C = Co-worker

A: Where's the cheese?
M: Over under the window.
Customer wanders over to the cheese case and stares down into it for a while.
A: Is this the only brand of cheese you carry?
I stare blankly at him for a moment.
C: That all we have, sorry.
M: (very quiet) No, there's a whole display in the cooler we don't want anyone to see, much less buy from.
Customer sneers and walks out.
C: Moron.