If you have ever had tea or coffee while traveling on a train, you must have noticed that the disposable glasses made especially for the railways have ” crush after use” written on them. This is done to avoid re-usage of the used glasses so that hygiene is maintained and infections don’t spread. But seldom have I seen anyone obey these simple instructions meant for their own good. Some throw the glasses out of the window without crushing them while others are too lazy to do even that. They keep the used glasses under the seats from where they are picked up and reused by the chaiwalas!