Tushi elephant's bum is enormous. Big Bum Tushi Big Bum Tushi The animals keep teasing as they show off their petite bums to her. Exasperated, Tushi decides to shrink her bum in order to fit in. But is Tushi simply a big bum or is there more to her? An important book about going beyond physical appearance to look at the real worth of an individual - an elephant in this case, who is much more than a big bum.