Wiktionary
sits on the fence
vb. (en-third-person singularsit on the fence)
Usage examples of "sits on the fence".
Now he just sits on the fence, watching and giving advice to the other roosters.
And don't forget this: a man who sits on the fence usually tears his breeches.
It is an interesting battle to watch among science fiction fans, but for someone who sits on the fence post (like me) it is exasperating.