A fart that happens so fast and unknowingly that there is no time to tighten butt muscles.
Usually by constant laughter
Usually by constant laughter
John: So the police officer says 'thats not a donkey, thats my grandma!'
Jerry: LMFAOBBQWTFLOL!11! *flash fart*
John: Yo did you seriously just flash fart?
Jerry: LMFAOBBQWTFLOL!11! *flash fart*
John: Yo did you seriously just flash fart?
by Cody Baggs is here October 15, 2007
When you take a flash photo of someone while they are sleeping right before or after someone farted so they wake up to a fart sound and/or smell
She's giving you that look that Tony had on his face after I flash farted him and he yawn-gagged. It's like you're her nightmare in smell form.
by Jestah November 19, 2016