g'burgle
When your insides are so full of gas they start screaming, and it sounds like your stomach is trying to escape through your butt.
During my math test, I held it in so long my gut did a g’burgle that made my teacher yell at the ceiling.
My friend’s g’burgle during the movie was so loud, the theater asked him to leave.
I was on the bus and my gut let out a g’burgle so bad, the whole bus started laughing at me.