Where did the birthday bumps come from?

Related questions

1. Is Birthday important in our life?
2. How do you say happy birthday in Puerto Rico?
3. Do birthday wishes come true?
4. How do you say happy birthday in Greece?
5. Why do we make a wish on your birthday?
6. Can you say mazel tov for a birthday?
7. Do Germans sing happy birthday in English?
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Tags

1. #ireland
2. #english
3. #usually
4. #there
5. #tradition
6. #bumps
7. #other
8. #years
9. #equals
10. #number
11. #floor
12. #given
13. #person
14. #european
15. #countries
16. #bumping