The Pirates of the Caribbean star still has nightmares about the time a fire-breathing experiment went wrong - and left him in flames.

He tells WENN, ""I did spew a little fire in my youth when I very dumbly chugged a little bit of gasoline and blew it into a torch and my head was on fire.

""It's a weird thing when your head is on fire. You tend to panic first and then when panic kind of sets in and you can't put your face out you run, which is the worse thing you could do. A friend of mine, this guy named Bones, came over and put my face out! He saved my life.""