Borborygmus
Say: bor-buh-RIG-mis
How do you know it's lunchtime? Your stomach just made a growling sound called borborygmus. That's because when the muscles in your digestive system move food, liquid, and gas through your stomach and small intestine, it produces a rumbling sound. Borborygmus can happen anytime, but is louder and happens more often when you're hungry because your stomach is empty. Growl!