Little rabbit Fru-fru, running through the....
oh, never mind.
Seems to be a necssary part of harvest wherever you live, that walking the last bit of standing grain, though I don't know about rabbit smacking. Failure to do it will result in a problem with the weight of the last few bails. When we were putting in the hay with neighbors, there would be that one that, when tossed to you, weighed a significant bit more. And Larry would say, "Oh, that must be the one with the cat in it."
Blessings,
Barbara