thats why you hide in the the tree and drop leaves and bark when people walk by. Ohhh another great thing me and my friend used to always do. We'd had this one tree we climbed like every day, and i brought my acoustic guitar, he brought his acoustic bass and we jammed in a tree!! It was funny because some people would walk by and hear the music but couldn't see us, it was hilarious watching them looking around. But the best one was this really old couple, like in their 80s, walking super slow, linking arms and right when they walked under our tree, we were playing this really nice, slow, romantic song, they kept walking for a while and then looked back and saw us in the tree and they just couldn't stop laughing, it was priceless, lol. trees are awesome