Once a guy goes to a mirror shop to buy a mirror. He wanders all over the shop before the shopkeeper comes and asks him,โMay I help you?โ. Guy: โI want a very strong mirrorโ. Shop keeper: โTry this one sir!Its just $1000/-โ Guy: โIs it really that strong?โ Shop keeper: โYes sir. If u want to know, you can throw this mirror from 100 storeyed building. This mirror does not breaks upto 99 floors sir!!โ