We burp, hiccup, fart, cough, sneeze, and our stomachs rumble. These are just the involuntary noises that are the by-product of bodily functions. Learn about the function of the uvula, burping and digestion, causes of stomach rumbling, whistling, beatboxing, gases that cause fart noises, knuckle cracking, hiccup superstitions and causes, different sneezes., and the purposes of coughing.