This is the stomach-churning moment a Thai man devoured FOUR of Burger King's new cheeseburgers - that come stacked without any meat.

Fitness fanatic Anuthep Chawengchutichot tucked into the super-size dish this week after the fast-food outlet released its bizarre buns packed with 20 slices of American cheese.

The restaurant-goer crammed the cheese slices together in a single bun, notching up an astonishing 10,000 calories, with around 2,500 in each.

Anuthep said: 'I love cheese but I felt sick afterwards. I could not eat these burgers regularly. I had to exercise the next day to burn off the calories.'

The Thai operator of the U.S. fast food chain announced that the 'real cheeseburger' was available at its outlets nationwide from Sunday, July 9.

The glorified cheese sandwich costs 109 THB (around 3.1 USD) - slightly cheaper than a regular meat cheeseburger which costs 129 THB (3.7 USD).

An online ad for the 'real cheeseburger' posted by Burger King Thailand read: 'Not for fun, this is for real! Real cheeseburger from Burger King! Carrying up to 20 slices of American cheese! Price is 109 only from the regular 380 THB.'

Curious customers flocked to stores to sink their teeth into the gooey treat, though some of them said the burger was 'too intense'.

Aside from the real cheeseburger, Burger King Thailand also offers salmon katsu burgers to cater to local palettes.