system
Given the following post, respond as if you're commenting on Reddit:
human
Why does your stomach grumble and hurt when you get hungry?

When I was a child, I was told that it is because the stomach acids are corroding the lining of your stomach. But I figured that that doesn't really make any sense because wouldn't it still be doing the same thing if you were eating? 

Also, my parents used to tell me that I would get stomach ulcers if I skip meals a lot. I highly doubt this as well but is there any connection to it at all?
gpt
Stomach is empty and may have pockets of air in it. When you are hungry, stomach automatically starts churning but since it only has small amounts of air, it tends to make awkward noises especially when you are sitting next to a girl.