They're at it again

A Pennsylvania restaurant thinks it has a winner. A Guinness World Record winner, that is.

Chefs at the Clearfield eatery said they've created the world's largest hamburger, all ready to order right off the menu.

Weighing in at 123 pounds, this giant burger features an 80-pound beef patty, a 30-pound bun, 12 tomatoes and 160 slices of cheese. Denny's Beer Barrel Pub also throws on a pound each of lettuce, ketchup, mustard and mayo -- and up to five onions.