Fattie auntie is a person who loves to eat she had a niece named lizzy and would always feed me food and I would never stop eating
by Fattie auntie November 22, 2018
Get the fattie auntiemug. A term used during fabrication of metal. Refers to joining 2 or more metals together using a welder and producing a weld that’s large and in charge.
by Benjothebanjo December 21, 2020
Get the laying a fattymug. 
by cookiesfordays September 2, 2021
Get the fattie linmug. 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. 
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.