I consider myself to be a pretty careful shopper. I look at the nutrition label, try to get the best price, and I always remember to check the expiration date (and then dig around to see if I can find a better date!) But this was something I didn't notice till after I got home: My hamburger buns came in a hot dog buns bag.
Not that it really matters. HD and HB buns cost the same, for the same quantity. It's basically the same thing only a different shape. But it was still funny.