How clever are you really? Can you answer these ultimate general knowledge questions?

1. Why do they put Braille on the drive through bank machines?

2. If Superman is so smart, then why does he wear his underpants on the outside of his trousers?

3. How do “Do not walk on the grass” signs get there?

4. Why does the loo flush one way in the north hemisphere, yet it flushes the other way in the south?

5. How can you tell when sour cream goes bad?

6. Why is lemon juice made with artificial flavor, and dishwashing liquid made with real lemons?

7. If man evolved from monkeys and apes, why are there still monkeys and apes?

8. Why is the word dictionary in the dictionary?

9. What hair color do they put on the driver’s licenses of bald men?

10. Who is the Muffin Man?

11. Where is Amarillo?

12. Why is the alphabet in that order?

13. Why isn't there mouse-flavored cat food?

14. If a drug store is open 24 hours, why are there locks on the doors?

15. If an orange is orange, why isn't a lime called a green or a lemon called a yellow?

16. Why don't people on TV ever go to the bathroom?

17. If one synchronized swimmer drowns, do the rest have to drown too?

18. Why is it considered necessary to nail down the lid of a coffin?

19. If the post office has machines that can sort snail mail by the thousands per minute, then why do they give it to a little old man on a bike to deliver?

20. How does a thermos know if the drink should be hot or cold?

21. Who was the first to see a cow and think "I wonder what will happen if i squeeze these dangly things and drink whatever comes out?"

22. Why doesn't Tarzan have a beard?

23. If you choke a Smurf, what color will it turn?

24. If knees were backwards, what would chairs look like?

25. How young can you die of old age?