A fart produced after the consumption of much Guiness that is so foul and lethal to the nose that the drinking of Guiness may be prohibited by friends and loved ones.
"Fucking hell Ant, even you look disgusted by that one, no more Guiness for you. Guiness fart? Did you shit yourself?"
When all typical gaseous characteristics are met and one approaches the release of said gas in the form of a flatulent (ˈfärt - verb) but they ultimately end up releasing diarrhea instead. The faux fart phenomenon is most commonly reported after significant alcohol consumption when ones fine motor skills are impaired. Although data has not yet surfaced to support the claim, it is believed that the Faux Fart is the #1 cause of underwear loss.
Remember last night when I drank those 40’s of Old English 800? I must have been drunker than I thought cuz I guessed wrong on a the Faux Fart.
Jimmy thought he was going to drop a loud ass bomb, but he ended up tossing his underwear in the garbage due to a Faux Fart.