1 definition by wfkelcor
A flatulent so powerful and instense that it vibrates your butt cheeks so hard and causes them to slap together profusely!
Cortney had a case of the slappy farts I knew because i could hear them from across the room!
Kelsey woke up and felt her butt cheeks vibrating and just knew she had the slappy farts!
Kelsey woke up and felt her butt cheeks vibrating and just knew she had the slappy farts!
by wfkelcor December 23, 2010