Does anyone know if David Hartman of Detroit has moved recently?

I have something for him.

I found this little composition on a rain drain pipe on my way to school yesterday. I think it is in part accidental.

what is the correct english expression for "rain drain pipe?"

I also discovered this new Banksy. It's all very accidental indeed.

but my favourite is this world cup themed Telekom ad. German soccer fans were accidentally placed behind razor wire at a construction site. I don't mind at all, if you care to know. They look quite scary to me.