What worse hands on this particular board are we hoping he shoves that don't call a shove?
I guess I'm hoping that slowing down at turn has him thinking our overpair just became an underpair, that we're folding to pressure. If he has say TT, he might think we're folding QQ if he gets the money in. I certainly feel this is more likely than him calling worse at river.

A small bet has merit, but again our discipline is being put to the test. I suppose it's easier to b/f than c/f though.