bum sneeze

When you blow your nose or sneeze and you let a fart go by accident. Can also be used to to simply describe a fart on it's own.

I was blowing my nose when a bum sneeze slipped out.

mexican bum sneeze

When one male hovers above another, spreads his ass and projectile sprays taco shit all over the recipents face

Jose loves to give chris a good ol mexican bum sneeze everytime he has a taco bell big box combo