Degratory term for a fat person. Person is generally fat. Often used without having literal meaning.
That man is such a Fatty McFat, he wouldn't even move his legs in the cinema!
von Baz 30. November 2003
A huge, large nasty person. They are probably smelly and greasy, disgusting and generally repulsive.
Damn, Look at that whore Tauni, She turned into such a Fatty McFat after I dumped her slutty ass. She slept with every fool on the Winco night crew.
von Rob Lussier 6. November 2006