Litter.

I was rather “P”ed off as we walked into the local food emporium today. A lout walking just in front of us finished off his lunch and lobbed the empty can into the hedge. Had he not been forty years younger than myself, eight inches taller and three stone heavier, words would have been said; not least because he passed a litter bin ten yards further on. His parents, who won't be married, must have set the example.
As it was, I kept my mouth shut, took the picture and put the can in the car boot for recycling.