What does on the fence mean slang?

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Tags

1. #common
2. #sitting
3. #argument
4. #fence
5. #choose
6. #between
7. #hesitance
8. #sides
9. #person
10. #idiom
11. #neutrality
12. #inability
13. #decide
14. #courage
15. #competition
16. #english
17. #describe
18. #decisiveness