I did .. this morning ...
I squinted up at the sky while I was waiting for a bus to take me into the city. There was large bird circling while it was flying in my direction. I just couldn't make out what it was .. then I realised it had company, another two of these weirdly flying birds.
As they got to nearly overhead I thought maybe I was hallucinating ...... A Triceratops, followed by a T-Rex... and a short distance behind .. a Stegosarus ................ helium balloons. It gave me a laugh, I was just sorry I was the only one at the bus stop.