As a child, Tarrare had a huge appetite and by his teens could eat a quarter of a bullock, weighing as much as Tarrare himself, in a single day. By this time, his parents could not provide for him and had forced him to leave home. For some years after this, he toured the country with a roaming band of thieves and prostitutes, begging and stealing for food, before gaining employment as a warm-up act to a travelling charlatan. Tarrare would draw a crowd by eating corks, stones and live animals, and by swallowing an entire basketful of apples one after the other. He would eat ravenously and was particularly fond of snake meat.
In 1788, Tarrare moved to Paris to work as a street performer. He appears to have been successful in general, but on one occasion the act went wrong and he had severe intestinal obstruction. Members of the crowd carried him to the Hôtel-Dieu hospital, where he was treated with powerful laxatives. He made a full recovery and offered to demonstrate his act by eating his surgeon’s watch and chain; M. Giraud, the surgeon, was unimpressed by the offer and warned him that if he did so, he would cut Tarrare open to recover the items.
Source: Tarrare – Wikipedia