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What you do when you get a big mac, supersized fries, and a extra large malt at McDomnalds
Yo I mcstuffed myself today at mcdonalds
by Lil Duff 2008 August 06, 2008
The legendary goop from which all McDonald's menu items are derived. Chilled and pooped out of machine into a cup, it's a shake. Baked in an oven, it's a bun. Grilled, it's a burger. Molded different ways and fried, it's french fries, chicken nuggets, onion rings, etc.

Generally anything that comes from a McDonald's restaurant.

Also anything that's cheap, abundant, undesirable and valueless.
The McStuff... it is... ALIVE!
by pingnak August 25, 2010