82-Year-Old Heavy Metal Grandpa Screams ROB ZOMBIE's "Dragula" Scaring America's Got Talent Judges

82-year-old John Hetlinger is having quite the moment. A few weeks ago, he rose to viral fame when his cover of Drowning Pool's "Bodies" swept the internet. The band were so amazed by the cover, they even invited John up to the stage to perform with them at Chicago Open Air this past weekend. But John wasn't done yet. He returned to America's Got Talent last night and this time, he performed Rob Zombie's "Dragula," scaring Heidi Klum in the process.