1. A body of water, smaller than a river, contained within relatively narrow banks.
Creek or stream. Though where I grew up there were more sinkholes and swamps.
2. What the thing you push around the grocery store is called.
3. A metal container to carry a meal in.
4. The thing that you cook bacon and eggs in.
5. The piece of furniture that seats three people.
Couch, but it was a davenport if my grandparents said it. Actually, there was a "couch" too; the davenport was in the living room and was bigger, but I don't know why it had a different name actually. The two-person thing I call a "loveseat" they called a "sofa".
6. The device on the outside of the house that carries rain off the roof.
Gutters. What else are they called?
7. The covered area outside a house where people sit in the evening.
8. Carbonated, sweetened, non-alcoholic beverages.
Coke. I've been trying to teach myself to say "soda" since I moved West, but sometimes I'll forget and ask for a "coke" and get surprised when I'm not asked "what kind of coke do you want?"
9. A flat, round breakfast food served with syrup.
Flapjacks, but here they're pancakes.
10. A long sandwich designed to be a whole meal in itself.
Sub, or hoagie.
11. The piece of clothing worn by men at the beach.
(If they're old and saggy and in Florida, Speedos.) Trunks.
12. Shoes worn for sports.
13. Putting a room in order.
14. A flying insect that glows in the dark.
15. The little insect that curls up into a ball.
16. The children's playground equipment where one kid sits on one side and goes up while the other sits on the other side and goes down.
17. How do you eat your pizza?
If it's thin, eat the tip, then fold the last 2/3 towards the crust and eat sideways. If it's thick, with a knife and fork.
18. What's it called when private citizens put up signs and sell their used stuff?
Rummage sale. 'Cuz you rummage through stuff in boxes?
19. What's the evening meal?
Evening meals are usually "dinner" with "supper" referring to something earlier, more like 5ish. This is backwards to how most people know it, and I have no idea why it was backwards for my family. I tend to prefer to eat earlier, and sometimes I'll use "supper" without specifying I mean an early meal and it can cause misunderstandings.
20. The thing under a house where the furnace and perhaps a rec room are?
Basement, I guess, but in Florida we didn't have those, nor did we have furnaces and rec rooms under the house - that was converted garages or porches (porches are in the back and were often screened, stoops are in the front). we had crawl spaces or "the area under the house" if it was up on posts. Growing up I thought basements must be magical things and my first proto-blog, a paper newsletter and commentary zine I snail mailed to friends and family in High School, was called "The Basement Window".
21. What do you call the thing that you can get water out of to drink in public places?
Water fountain. Increasingly, vending machine or steel bottle.