I wish I'd have thought of this, using contrails from jet planes to draw in the sky. You just have to read this one for yourself, but it's Good. They should have done this over San Fran. Go Navy!
https://www.washingtonpost.com/nati...-drew-giant-penis-sky/?utm_term=.ee891e142e9e
https://www.washingtonpost.com/nati...-drew-giant-penis-sky/?utm_term=.ee891e142e9e