Go to that flag thing

You carefully walk to the tree and look up. There is a piece of cloth fluttering on the highest branch. It´s white, red, blue, and filled with tiny hearts …That´s not a flag at all, it´s your panties! How did Sabrina manage to hang them all the way there? Maybe they were carried by the wind? It matters not. You want them back!

In front of you is the mighty trunk of the tree. There aren´t any branches to hold onto at your level. Climbing is not an option. Maybe you can try knocking your panties down?

You grab a rock and throw it up with all your strength. It doesn´t reach, and you have to dodge as it falls. You try again and again, but your throws are just shy of your target. If only there was a way to add just a bit more power to your rocks, you could knock down your panties for sure.