I'm not sure when graffiti happens in my part of town but you never see anyone actually doing it.

But the young man in Spitalfields this afternoon was busy spraying when I stopped to chat. I've always longed to do that, I confessed. (I was wishing he'd offer me the can to have a go but he didn't.)

Just do it, he said. Grab a can and just do it.

I felt enormously pleased that he thought I had it in me.

Another young man in a vintage shop on Sclater Street had a twirly moustache that was very Salvador Dalí.

If only I'd had a camera.