What does too big for your britches mean?

Related questions

1. Can a human outrun a horse?
2. What are breeches used for?
3. Can you ride a horse on the road?
4. What do equestrians wear?
5. How far can you ride a horse in a day?
6. How long should boots last?
7. What shoes should I wear for horseback riding?
8. Can I wear leggings horseback riding?
9. What does full seat breeches mean?
10. How do you wear breeches?

Tags

1. #conceited
2. #gotten
3. #britches
4. #pants
5. #there
6. #1800s
7. #swollen
8. #metaphoric
9. #tournament
10. #important
11. #anymore
12. #longer
13. #talking
14. #alludes
15. #becoming
16. #idiom
17. #boots
18. #since
19. #conceit