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17 Little Things That Should Be Common Knowledge But Aren't

This involves pizza. THIS IS NOT A DRILL.

1. If you're losing a lot of weight for no reason, go see a doctor ASAP.

2. The tops of most stoves lift for easy cleaning.

3. The average color of the universe is this shade of beige, which astronomers have dubbed "Cosmic Latte."

4. The sun is actually WHITE.

5. When meeting new people, you can use the FORD acronym to come up with things to talk about.

6. Don't clean with ammonia and bleach at the same time.

7. You can type any doctor's name into this database and see what types of kickbacks or payments they've received from drug companies.

8. The abbreviation "Xmas" doesn't originate from a plan to "take Christ out of Christmas."

9. It's not healthy for your cat to eat or drink dairy products.

10. This is what all those laundry symbols mean on your clothing tags.

11. One 18" pizza is more pizza than two 12" pizzas.

12. Light roast coffee actually has more caffeine per bean than dark roast.

13. If you're buying a used car, the orange "check engine" light, and all warning lights, should temporarily come on when you start the vehicle.

14. Bales of hay can spontaneously combust due to moisture.

15. Fifteen-year-old Claudette Colvin refused to give up her bus seat nine months before Rosa Parks did.

16. The proper contraction for "could have" is "could've," not "could of."

17. Cinco de Mayo isn't Mexico's independence day. It's the celebration of the Mexican army's victory over the French in the Battle of Puebla on May 5, 1862.