The plastic bag got dropped on the street by it’s owner.. It was windy that day, but the bag still wanted to have fun. So, he waited for the red light and walked across the street to the cafe, looked through the windows and saw everyone enjoying themselves. This made him happy, and he continued his walk down his local boulevard. As the day progressed, the wind got less strong and he was tired from walking all day, so leaned against a brick wall and rested.
