I was once asked by a visting American friend why there was so much trash (rubbish) in London. I answered that it was because there weren't very many trash cans

I was once asked by a visting American friend why there was so much trash (rubbish) in London. I answered that it was because there weren't very many trash cans at all. "Then why don't they install some? Perhaps people would respect their environment a little more". "Because the IRA put bombs in them".