Like this one, copied from sylph's post here:
We're driving back home and Justin points up at the sky and says..."Uh mom?"
"I know" I told him "that's sort of odd..."
I mean maybe I'm slightly paranoid in light of recent events and all, but jet planes don't usually pull big U'ees in the sky do they? I mean usually all jet streams are in straight lines...right?
But there it was right before us, a perfectly U-shaped ribbon in the sky...
An image forms and ... and ... and just stays there.