One with the perfect blend of geenus and muffin top, such that it has it's own Mc gravitational pull generally topped by large back tits.
Godzilla in the form of stacked fat roll's, sitting on the whole park bench, devouring deep fat fried oreo's at the fair. Sorry kid's fatty Mcass ate my last 43lbs of cookies.
by grundolph the brown February 27, 2010
Get the fatty Mcassmug. ‘Fatty McFuckhead’ is a term created by friendlyjordies to defame or correctly state the horror known as Clive Palmer, a mining tycoon who is disgustingly rich, slobby, has a wife who is twenty years younger than him and he also is an avid Trump supporter. Kill this man now, the TimsTams aren’t enough.
by Willybumweetoe May 24, 2022
Get the Fatty McFuckheadmug. 
Basically, jerking off. Also known as masterbation, meat-beating, whacking off, rubbing it out, etc.
by Sneakysithguy February 26, 2021
Get the crank a fattymug. by hehehmaeve January 28, 2021
Get the uncle fattymug. by HandyMan189 July 5, 2017
Get the fatty bumbattymug.