Makes Me Nauseous

Old lady: You spelled "candle" wrong.
Employee: What?
Old lady: You spelled "candle" wrong on one of your signs. Give me a piece of paper and I'll fix it for you.
Employee: It's okay.
Old lady (getting extremely angry): No, it is not okay. This is inappropriate and you need to fix it.

--Duane Reade

Overheard by: just buying some shampoo