Tensingh climbed mount Everst for the nth time. He went to the usual tea shop but there was no one around to give him a cup of tea. He waited and after a few mins the shop owner arrived carrying a empty glass and a flask. Tensingh looked at him quizzically, for which he replied there is an office up there with a name board TCS. There is one person sitting there in front of a laptop and he has paid me advance to supply him tea on a monthly basis thrice a day.