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.