Politicians have a way of passing the buck to the media when caught on the back foot. Power, Coal and New & Renewable Energy Minister Piyush Goyal yesterday sought to deflect criticism heaped on the Bharatiya Janata Party (BJP) for its advertisement in local papers labelling Aam Aadmi Party chief Arvind Kejriwal as belonging to the "upadravi gotra" (trouble-making clan). He lashed out at journalists and went on to explain the etymology of metaphors, claiming that the use of the word "trouble-making" was metaphorical. It may be recalled that some years ago, when Salman Khurshid was cornered by journalists after his remark that until then, one had only seen "cameos" of Rahul Gandhi's thoughts and ideas, the Congress leader had defended his position by launching into a lecture on English grammar.