The day he was a tree

One sunny day I went to the park but so I could walk my dog and I let him off the leash and he went running so fast he dug this hole in a random place which I didn't understand but I said "OK" to my self. He came back to me with a ten pound note - I had enough! That was just crazy, so I went to give it in. I knocked on the glass window and no one answered so I just opened it my self and the man was a tree and I fainted on the spot and I didn't wake up.