Are you hungry?

A Pennsylvania pub serves the world's biggest burger — weighing in at NINE lip-smacking pounds! That's no whopper — you can actually get this meat monster for $23.95, loaded with all the fixings: Two whole tomatoes, a half-head of lettuce, 12 slices of American cheese, a full cup of peppers, two entire onions, plus, a river of mayonnaise, ketchup, and mustard.

Denny's Beer Barrel Pub in Clearfield, Pennsylvania, offers several varieties of "large" for the extreme burger enthusiast: a 2-pound Challenger, a 3-pound Baby Boy, and, as displayed in the pictures shown above, a 6-pound Ye Olde 96er (so named because it contains 96 ounces of meat).

Denny's (not to be confused with the national chain restaurants of the same name) offers prizes for customers who can completely consume one of their big burgers within a designated time period: a T-shirt, certificate, and 50% discount for anyone who finishes a Challenger (2 lb. burger) within an hour; a T-shirt, certificate, and 100% discount for anyone who can polish off a Baby Boy (3 lb. burger) in 90 minutes or less; and something special for anyone who manages the unthinkable and puts away a whole 96er (6 lb. burger) in under three hours.