What does the word "Jaws" mean here?

Jaws appears to be a nickname to describe the prowess of the person's eating ability.

Jaws is also a title of the very famous Steven Spielberg film featuring an infamous man-eating shark.
http://www.imdb.com/title/tt0073195/

Also, there is a character in few James Bond films, named Jaws, known for his "metallic" set of teeth and biting ability.

Jaws was a novel and then a movie that came out in the 1970s [??] about a Great White Shark that terrorized an Eastern seaboard American seaside resort town.

There's a drought and famine in the Horn of Africa, affecting millions of people, many of whom will die.

Meanwhile, in the West, we can have eating competitions.