London, May 19: Dungeon victim Felix Fritzl couldn’t believe it when he was taken to a secret trip to McDonald’s – because he thought that the ads for the burger giant were fiction.

The six-year-old, freed from incest dad Josef Fritzl’s dungeon, was thrilled to discover that the fast food eatery was real.

A source revealed that the youngster was ecstatic after tucking into his first Happy Meal.

“He loved it,” The Sun quoted the source, as saying.

Psychiatric nurses gave Felix sunglasses to cover his eyes after his life underground.

The family, Elisabeth, Felix and his brother Stefan, 18, is making "real progress" at the clinic they have been at in Amstetten, Austria, since being freed from the clutches of rapist Josef Fritzl's underground dungeon after 24 years.

It has also emerged that Elisabeth is set to tell of her ordeal in a TV interview next week. (ANI)