Imperial, California - Some fast-food restaurants brag that their hamburgers are made with a half-pound of ground beef. But Bangkok’s Chris Steaks and Burgers boasts that they’re ready to serve you a burger made with a 13-pound beef patty, says the Association of Mature American Citizens. 

It comes with fried onion rings, bacon, mayonnaise and a cash prize of more than $300, if you can down it in nine minutes. The owners say that at least three of their customers have already managed to devour what some call the “whopper of all whoppers.”