Andrew Wythe, 52, of Mullion, England, said he was pouring gasoline on a garden bonfire Sunday when the flames grew to engulf the front of his body, The Sun reported Thursday.
He said he ran toward his son, Nicholas, 15, for help and the teenager grabbed a two liter bottle of Coca-Cola, shook it up and sprayed the contents on his father.
"The fire went out straight away," Wythe said. "He's a very level-headed boy. Without Nicholas it would have been a lot worse, without a doubt. I was lucky really."
Wythe said he suffered burns to his neck, chest and ears and will require skin grafts.