"Attention shoppers, we have a special on 'foot in mouth' in aisle 3."

Overheard in the dairy products aisle of the supermarket:

Woman shopping for cheese - "That's not right. Two for seven dollars is three-fifty each. Didn't you go to high school?"

Clerk helping her, very quietly - "No."

Woman - "Oh."

*awkward silence*

Woman - "Sorry about that."

-------------------------------

Reporting on eavesdropped conversations is territory covered well and enduringly by In Passing... so I've resisted doing it here. But this one was too good to pass up. The woman's embarrassment was almost palpable.