gagster
A stinky fart so strong it could knock a man out. It's like a fart from hell and a turd combo.
I ate too much and let out a gagster. My whole class was out for the day.
He farted so loud and smelly, it was like a gagster. Everyone ran out of the room.
That fart was so bad, it was like a gagster. I swear I saw the teacher cry.