In this particular stage of his journey, Gulliver finds himself in the land of Brobdingnag, which is the exact opposite of Lilliput. Here, Gulliver appears as a tiny little creature, whereas the local inhabitants are giants.
This makes him something of a rarity, an object of curiosity for the farmer who finds him and takes him into his home. The farmer soon realizes that he has a potential goldmine on his hands and seeks to exploit Gulliver for all he's worth.
To that end, he takes Lemuel from place to place, displaying him as if he were a freak in a circus sideshow. Gulliver speaks his normal language, which to the people of Brobdingnag is remarkable, because it sounds just like theirs. He also performs diverting tricks that people find an endless source of delight. He drinks to the health of his audience, using a thimble for a cup; he also brings out his hanger and uses it as if he were fencing.
People come from miles around to see this strange little creature. Apparently, they're so keen to get a glimpse of Gulliver that they're prepared to break down doors to see him. The farmer exploits the massive interest in Gulliver by charging people to see him to perform and makes a lot of money out of his discovery.
Gulliver, however, is exhausted by the constant travel and the seemingly endless round of performances. To make matters worse, his new career as a sideshow freak is dangerous; during one performance, he's almost brained by a hazelnut thrown at his head by a schoolboy.