harmonized fart 

A harmonized fart is when multiple people are farting from there butthole to make a harmonized flatulance sound that makes people think twice about ones farting.

Guy 1: "What was that noise, it was a such a harmonized sound."

Guy2: "Oh, that was a harmonized fart."

Guy1: "Oh ok, I wish to hear that again soon, it was just so harmonized it was beautiful."

harmonized fart by Dubstep Quantum December 4, 2013