Home Uncategorized (Video) Meet 14 Year Old Isaac Johnson who has the World’s Largest... Uncategorized (Video) Meet 14 Year Old Isaac Johnson who has the World’s Largest Mouth By Marcus Berry - December 17, 2019 14 0 FacebookTwitterPinterestReddItCopy URL Not for the faint of heart. Meet Isaac Johnson, a 14 year old who holds the Guinness World Record for the larges gape. Facebook Comments