"The full form of GST is...," fumbled an Uttar Pradesh minister as he struggled to get the correct answer just less than 48 hours before the roll-out of the Goods and Services Tax (GST). Social Welfare, Scheduled Castes and Tribal Affairs minister Ramapati Shastri was caught on the wrong foot today when mediapersons asked him to expand the abbreviation while he was interacting with local businessmen in Maharajganj to apprise them of the benefits of the much-touted new tax regime.