"The Extreme Grandpa" from Canada

At 91, John Carter shows you’re never too old to be a YouTube sensation. The Trail, B.C senior stars in a video by devinsupertramp called “World’s Most Extreme Grandpa,” that since its Tuesday release, has already garnered 46,000 views and counting. “It’s crazy the comments I am getting because I go to the pool every night at 8,” John chuckled. “I just walked in the door and the (front desk clerk) right away said, ‘Can I get your autograph?’”

When John Carter is bored of doing backflips off the 10-foot diving board, he will occasionally do a back flop to show off. Except, sometimes, the lifeguards have to point out to the 91-year-old that he's lost his dentures. "