How fat is wario

Very. In the back of the Wario World instruction booklet it says he weighs 308 pounds. He is also quoted saying:

"So admit it..... Don't I look cool in the game screens? Those long, muscular legs on my sturdy toned frame.... I'm the perfect specimen of a man ..... What!?!? You say I look fat and my quadruple chin looks like a waterfall of flab? Shut up! That's just because you have your television set up on widescreen display!"
-Wario, Wario World

...also, when he eats a donut-power up in the Gameboy games, he becomes so fat that he causes earthquakes by just jumping!