My kiddos really like seeing the wildlife in our backyard. Currently we have a bunny that sleeps in the shade of a swing in the afternoons. One time, my little guy pointed out a "big bird, Mom!" and yep there was a hawk chilling on our fence. The bunny was not around at that point, for good reason.
Explanation: "On the fence" is a phrase that means you're undecided about something. But sometimes things can literally be on a fence. And being literally on a fence can show that you're undecided about coming into a yard.
Text:
O: SQUIRREL!!!
L: Will he come in the yard? He seems on the fence about it.
M: *GROAN*