Found along a walkway in Forest Park next to each other. Some people visiting the park were staying safe while others were careless. The writing below is a bit of scrawl but we think it says "Follow Photography Friend 816 on Insta [gram?]. I don't do Instagram. Maybe a user can check it out and report back.
To my Midwestern eye, the words look like they are being sucked into the top of a tornado. I have seen a tornado once in my life, from the 23rd floor of an office building while it was crossing the Mississippi a safe distance away. It was awesome in the most traditional sense of the word.