West Bengal Chief Minister Mamata Banerjee on Monday described Union Home Minister Amit Shah's recent visit to a tribal household here for lunch as a "show off" and claimed that the food items served to the BJP leader were cooked by others. Banerjee, during a programme in Bankura, hit out at Shah for apparently mistaking a statue of a tribal hunter for that of freedom fighter Birsa Munda and said her government would declare his birth anniversary as a state holiday.