And its excess causes not only belching, flatulence and belly pain, but also functional constipation. The pressure sensation is often relieved, or at least lessened, by belching or flatulence. Excess dietary fiber intake is a known cause of belching, gas and bloating. Symptoms may include upper abdominal fullness, heartburn, nausea, belching, or upper abdominal pain. The cartoons often feature light-hearted, toilet humour-themed poems about belching or flatulence. Other symptoms include belching, vomiting, weight loss, or poor appetite. Though these enzymes can help reduce gas and belching, they may not always reduce bloating. On several occasions Toph appears picking her nose, spitting, and belching loudly. Those blasted twigs - they would burn, and go out quickly, belching smoke. One cow can emit up to 130 gallons of methane a day, just by belching. A portion of this is due to methane from belching ruminants. Marge then hears something glugging and belching downstairs. He was depicted holding a can of Elders IXL, while belching or exclaiming "pig's arse". The contests would include a belching contest, a pie eating contest, and a singing contest. Also on the bill was Declared Ungovernable, Belching Penguins, and The Rhythm Pigs.