Some things never die. When we were young, there used to be this popular belief amongst us kids that one could make an eraser from pencil shavings. My brother and I were serious subscribers to this strange alchemy experiment. Once our mother got us a new box of pencils (yipee!) and we dutifully sharpened it away completely to gather the wooden shavings. The scolding was unbelievable!
I had forgotten all about my belief in this Indian Alchemy till recently. My brother has told me that his son and daughter are the latest proponents of this idea. When the son was quizzed (he is elder) as to where did he get to learn such nonsense, he replied, "मेरे दोस्त ने स्कूल में बताया था!"
I think this is a kind of rumour that gets handed down from one generation to the next! If you have any rumours of your to share, please do comment.