There is a place in Memphis, TN, called Big Foot Lodge that serves a giant burger called the Sasquatch. It has a 4-pound patty, with a 1-pound bun, and 1 pound of fries. If you eat it all it is free. As far as I know no one has finished the burger. We followed it up with a desert they call the Yeti, which is 18 scoops of ice cream with every topping known to man including fruit loops.
From their menu: The legend lives here!! 4 pounds of pure beef, on a fresh baked bun, topped with lettuce, tomato, onion, pickles and cheese. If you and only you eat it ALL, plus the fixings in under 60 minutes it's on us, not to mention that you get your picture on the Big Foot wall of fame... 19.99