There then born was the phrase mass fat. Now used in conjunction with the mass rotation, in situations of obvious not-funess/uncool-ness/shittyness.
Also can be used as an exclaimation, or as adjective. Sometimes as a suggestive noun.
person one: Dude! The French was due yesterday!!!
person two: MASS FAT!!!
person one: Do you know Avirl Lavigne?
person two: She's mass fat.
*person one does a crappy move in soccer*
person two: You're mass fat at soccer.