Help! (Trigger warning)

I’m not a cow! Why does this keep happening to me??

One day I was peacefully eating my dinner, and suddenly got scared and then some rice entered a hole in my mouth I didn’t even know existed! I was there in pain, coughing until it came out.

But then, after that, it happens all time! Sometimes I wake up only to realize there was food in there all night and it only came out on the morning, it’s absolutely disgusting! I’m not a cow to be keeping food in my mouth like that! How do I make it stop? Does anyone knows how to help me???