I know there have been threads here before about cashiers not recognizing food items so I had to share this one:
I was in the checkout line and the lady in front of me had buttermilk.
The cashier asked her why she was buying "spoiled milk" and "what do you do w/ it?"
The customer said "I use it to make cakes sometimes and other things"
The cashier said: "wouldn't the cake mix be lumpy and sour? I've never seen a mix here that you add milk too."
The customer said "ah,no! Buttermilk isn't lumpy and I make the cake from scratch, not from a mix.
Cashier: "Oh, the old way, huh?"
The Customer: "sometimes I dip chicken in buttermilk before I fry it, too" (the deep south here!)
The Cashier said: "You mean you fry chicken at home?! I didn't think people did that any more since you can buy it at the deli! Wouldn't it make the chicken sour?"