1. Small talk isn't actually needed
It's okay to not make small talk with every person you pass, or stand next to in a store, or someone that even remotely glances at you. The Midwest is overly friendly... and by that I mean overly in your business.
2. Hotdish isn't universal
Most other people call it casserole.
3. Duck, Duck, Grey Duck
It's duck, duck, goose to literally everyone else.
4. Everyone else wears coats
it drops in the 30's and people have put away their shorts and pulled out coats... you probably should too.
5. Minnesota doesn't understand vowels.
Minnesotans are cursed with a slight misuse of vowels. So that will be something you're constantly mocked for. (Just roll with it)
6. Every other state fair will disappoint you
"Minnesota's great get-together". It has that name for a reason. No other fair will have something like cookies served by the bucket.
7. The Lakes
No one else will quite understand why every childhood story you tell always involves a lake somehow- It's the land of 10,000 lakes for a reason.
8. Padiddle
A fantastic game played in the car. You'll get odd glances if you yell that randomly if you aren't in the Midwest.
9. Culvers
The holy grail of fast food, that 98% of America is missing.
10. Puppy Chow
No, not dog food. But you can make some mean puppy chow if you're from Minnesota.