Pretzel
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While shopping in a food store, two nuns happened to pass by the beer, wine, and liquor section. One asked the other if she would like a beer.
The second nun answered that, indeed, it would be very nice to have one, but that she would feel uncomfortable about purchasing it.
The first nun replied that she would handle that without a problem. She picked up a six-pack and took it to the cashier. The cashier had a surprised look, so the nun said, 'This is for washing our hair.'
Without blinking an eye, the cashier reached under the counter and put a package of pretzel sticks in the bag with the beer.
'The curlers are on me.'