The easiest way to get a bunch of people to be quiet.
"SHUUUUUUUUUUUUUSH FATTIES" *the world goes quite in realization that they have been called fatties but don't respond because they've been told to shush* SHUSH FATTIES is an expression used to easily get a bunch of people to stop talking.
What a person says when s/he is immersed in loud, obnoxious fat people
Jack was listening to those fat, loud people talk on and on until he couldn't take it anymore. "SHUSH FATTIES" he hollered, causing the overweight people to be silent.