"He used to push himself from the table to the sofa; since he was two he could push himself.
This may partly explain why, at the age of 11, Khury was already breaking new ground in the sport.
Earlier this year, he became the first person to perform a 1080-degree turn - three full turns in the air - on a vertical ramp near his home in southern Brazil.
Hawk, who is widely credited with helping popularize skateboarding, was among the famous names in the sport to praise Khury for adding an extra U-turn to his record.
"Bob Burnquist, one of my favorites, he made a voice call... Tony Hawk too, he said cool things," Khury told CNN Sport.
The advantage of youth, says Khury, is that it lets you turn faster in the air, but the downside of a lighter frame is that you don't generate as much speed, and therefore height. , off the ramp.
With more time at home amid the coronavirus outbreak, he was able to make the short 15-minute drive with his parents to a ramp in his grandmother's yard each day, throwing his devolved on a historic 1080.
Little by little, the stuff seems to become more manageable.
"I felt like I was going to get there because the last two I failed, I got really close," says Khury.
"And then when I walked in, I just felt something in my head like, 'Oh my God, that's it.' And I just picked it up. "
As his wheels returned to the ramp, Khury had to crouch off the landing, his board drifting slightly to the left. He regained his balance and the celebrations followed.
Khury's father, who was spinning on the side of the ramp at the time, shared his son's growing sense of anticipation with each attempt.
"He was really, really close, we were just waiting when it was going to happen," he recalls.
"I was so proud of him because I know he's been in this battle to get this round and he has a lot of determination. He was dreaming about it and now he did it, it was amazing."
Khury's first skate lessons were held at the YMCA in the resort town of Encinitas, Calif., And from there he made steady strides in the sports history books.
At the age of eight, he became the youngest skateboarder to perform a 900-degree turn on a vertical ramp, and last year he became the youngest athlete to compete in the X Games.
Having finished school for the summer, Khury says he trains two or three hours a day in Curitiba with competitions suspended amid the pandemic.
"Anytime there's one I can go, I'll go as fast as possible," he says, adding that he hopes to perfect the 1080 to run it in competitions.
It's an exciting time for skateboarding after the sport was included in the Olympics; July 26 and 27 would have seen the sport's debut at the Games with street competitions, while last week would have marked events at the park.
As for Khury, he hopes to be able to compete in the Olympics in the future.
"It would be so cool," he says. "It's always been my dream for skateboarding to be at the Olympics and now it's finally here.
"I can't wait for next year."
