Nope, but now that you mention it....
It is sadly true that the day after seeing the movie with Mary Poppins flying around using her umbrella, I found three umbrellas (to provide a safety margin, of course) and jumped off the highest piece of playground equipment I could find. As I said, I was a trusting and none-too-bright child.
That dastardly Mary Poppins!
Then again, maybe I just used the wrong type of umbrellas.