EXCLUSIVE: 'America's Got Talent' returns with 82-year-old singer with a shocking wild side

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'America's Got Talent' contestant John Hetlinger shocks judges

Age ain't nothing but a number!

"America's Got Talent" returns on Tuesday and Simon Cowell definitely got a wild welcome back to reality television when an 82-year-old contestant literally had the stiff-upper-lipped Brit's jaw on the floor.

Cowell, along with judges Heidi Klum, Howie Mandell, and Mel B., got quite a surprise when John Hetlinger, a former Navy pilot and program manager for the instrument that repaired the Hubble Space Telescope took the stage. The elderly gentlemen, who was clad in khakis and a white polo shirt, was joyful as he walked onto the stage and waves to the crowds as he yelled, "Hey, ya'll."

Hetlinger, who hails from Broomfield, Colo., told the judges that after all of his incredible jobs, getting onto "AGT" "would be the high point of his life and many careers."

And with that the judges let him rip...

That's when the adorable retiree started yelling, "Let the bodies hit the floor, let the bodies hit the floor." The scary lyrics, of course, are from Drowning Pool's hit song "Bodies."

Hetlinger then burst into a blood-curling scream before he completely rocked out on stage, leaving the entire judging panel gobsmacked and the entire audience in disbelief. Many audience members got in on the action and started rocking out with him.

Hetlinger finished to a screaming crowd and cheers -- and the judges, were well, speechless.

WATCH THE EXCLUSIVE PERFORMANCE ABOVE

Catch the new season of "America's Got Talent" Tuesday on NBC at 8/7 central.

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EXCLUSIVE: 'America's Got Talent' returns with 82-year-old singer with a shocking wild side
AMERICA'S GOT TALENT -- Promo -- Pictured: (l-r) Heidi Klum, Simon Cowell -- (Photo by: Ron Batzdorff/NBC/NBCU Photo Bank via Getty Images)
Howie Mandel arrives at the "America's Got Talent" Season 11 Red Carpet Kickoff at the Pasadena Civic Auditorium on Thursday, March 3, 2016, in Pasadena, Calif. (Photo by Rich Fury/Invision/AP)
WESTLAKE VILLAGE, CALIFORNIA - APRIL 01: TV personality Heidi Klum (L) and producer/TV personality Simon Cowell speak onstage during the 'America's Got Talent' panel at the 2016 NBCUniversal Summer Press Day at Four Seasons Hotel Westlake Village on April 1, 2016 in Westlake Village, California. (Photo by Frederick M. Brown/Getty Images)
Howie Mandel arrives at the "America's Got Talent" Season 11 Red Carpet Kickoff at the Pasadena Civic Auditorium on Thursday, March 3, 2016, in Pasadena, Calif. (Photo by Rich Fury/Invision/AP)
WESTLAKE VILLAGE, CALIFORNIA - APRIL 01: (L-R) TV personalities Mel B, Heidi Klum and TV personality/producer Simon Cowell speak onstage during the 'America's Got Talent' panel at the 2016 NBCUniversal Summer Press Day at Four Seasons Hotel Westlake Village on April 1, 2016 in Westlake Village, California. (Photo by Frederick M. Brown/Getty Images)
WESTLAKE VILLAGE, CALIFORNIA - APRIL 01: TV personality Mel B speaks onstage during the 'America's Got Talent' panel at the 2016 NBCUniversal Summer Press Day at Four Seasons Hotel Westlake Village on April 1, 2016 in Westlake Village, California. (Photo by Frederick M. Brown/Getty Images)
WESTLAKE VILLAGE, CALIFORNIA - APRIL 01: TV personality Heidi Klum (L) and producer/TV personality Simon Cowell speak onstage during the 'America's Got Talent' panel at the 2016 NBCUniversal Summer Press Day at Four Seasons Hotel Westlake Village on April 1, 2016 in Westlake Village, California. (Photo by Frederick M. Brown/Getty Images)
WESTLAKE VILLAGE, CALIFORNIA - APRIL 01: (L-R) TV personalities Nick Cannon, Howie Mandel, Mel B, Heidi Klum and TV personality/producer Simon Cowell speak onstage during the 'America's Got Talent' panel at the 2016 NBCUniversal Summer Press Day at Four Seasons Hotel Westlake Village on April 1, 2016 in Westlake Village, California. (Photo by Frederick M. Brown/Getty Images)
Mel B arrives at the "America's Got Talent" Season 11 Red Carpet Kickoff at the Pasadena Civic Auditorium on Thursday, March 3, 2016, in Pasadena, Calif. (Photo by Rich Fury/Invision/AP)
Heidi Klum arrives at the "America's Got Talent" Season 11 Red Carpet Kickoff at the Pasadena Civic Auditorium on Thursday, March 3, 2016, in Pasadena, Calif. (Photo by Rich Fury/Invision/AP)
Simon Cowell arrives at the "America's Got Talent" Season 11 Red Carpet Kickoff at the Pasadena Civic Auditorium on Thursday, March 3, 2016, in Pasadena, Calif. (Photo by Rich Fury/Invision/AP)
Simon Cowell meets with a fan at the "America's Got Talent" Season 11 Red Carpet Kickoff at the Pasadena Civic Auditorium on Thursday, March 3, 2016, in Pasadena, Calif. (Photo by Rich Fury/Invision/AP)
Howie Mandel arrives at the "America's Got Talent" Season 11 Red Carpet Kickoff at the Pasadena Civic Auditorium on Thursday, March 3, 2016, in Pasadena, Calif. (Photo by Rich Fury/Invision/AP)
Nick Cannon arrives at the "America's Got Talent" Season 11 Red Carpet Kickoff at the Pasadena Civic Auditorium on Thursday, March 3, 2016, in Pasadena, Calif. (Photo by Rich Fury/Invision/AP)
Heidi Klum poses for a photo with fans at the "America's Got Talent" Season 11 Red Carpet Kickoff at the Pasadena Civic Auditorium on Thursday, March 3, 2016, in Pasadena, Calif. (Photo by Rich Fury/Invision/AP)
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