What does Bats in the Belfry mean?

Related questions

1. What are each fingers called?
2. What is a word for a quick thinker?
3. Is it bad to crack your knuckles?
4. Do not sit on the fence meaning?
5. Why can't you move your ring finger without your middle finger?
6. Do toes have names like fingers?
7. What does the idiom sit on the fence mean?
8. Does cracking your knuckles harm you?
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10. What is your first knuckle?

Tags

1. #mammals
2. #though
3. #flying
4. #origin
5. #topmost
6. #course
7. #careering
8. #someone
9. #phrase
10. #erratically
11. #churches
12. #belfries
13. #refers
14. #sometimes
15. #belfry
16. #towers
17. #found
18. #around