Got to tell one story of my trip to London : I was walking down the street and passed what looked like an abandoned Hotel . In front was a huge pile of clothes ....like maybe three feet high and five feet wide . All of a sudden I see two eyes pop up out of the pile of clothes . I see an old lady with a slightly dirty face . I was startled and thought ...what to do ? In the US that would be a street person . I reached in my pocket , fetched a coin worth a few bucks , and tossed it to her feeling I was doing a good deed . She caught it and threw it back at me saying something like " take your bloody money and XXXXXX ) ! Two Arab guys behind me ( wearing about a ton of Gold ) were laughing their heads off . I beat a fast get-away ! I learned later this was a " bag lady " . They walk the streets , pick up stuff and sell it to get enough for food , etc . They don't like charity ! It's sometimes good to learn the local customs ahead of time .