look up any word, like jamflex:
 
3.
1.A fat dude.
2.A spongy dessert that is laden with glycerol.
3.Offensive to a girl by implying promiscuosness whilst being obese (cake being connected to "bread").
4.A substitute for the word whatever.
1: You dumb idiot!
2: fattycake
by x014 August 03, 2004
 
1.
One who eats bad food like candy, frozen pizzas, otter pops, pop tarts, and so on and doesn't eat any healthy food. Reflects that of a college diet. The person does not even need to be fat to be a fatty cakes, they can be skinny and eat a whole lot of crappy food.

Also refers to a Donut.
Yo hommie you are such a fricken fatty cakes put down the swedish fish and cheese cake. Fricken Fatty cakes.

That chick is skinny but she is one fatty cakes.

Hey officer how did your fatty cake taste.

by Bobby Bogelheimer April 13, 2008
 
2.
a word which i pulled from teen girl squad which is a name for some fat person. i call my friends fattycakes all the time. as im sure you would too, they love it.
amy - hey there my friend. and by my friend i mean fattycakes.
amy's friend - hey amy. man, i love being called fattycakes more than life itself.
by amy pettifer March 22, 2005