It had been flying pretty much straight at Applejack's head, before she bent down to pick her a pen that had fallen out of her bag. That was when it hit the tree, and Applejack got up to investigate the noise.

"Well, I never!" she said, hands on her hips as she looked at the offending object. "What if that had hit somebody? What kinda crazy person goes throwing around this sorta thing here?" Applejack picked up the weapon and looked around for whatever idiot had thrown this, determined to give them a piece of her mind.