When he’s not tearing up the court at Madison Square Garden, Knicks player Kyle O’Quinn spends his Saturday nights tearing up the dance floor with tweenagers.

The 27-year-old Queens native has spun his Big Apple fame into a unorthodox side-gig — moonlighting as a bar mitzvah entertainer, according to a new report.

“The parties are crazy,” he told ESPN. “I did one, did two, and the next thing you know, I was just Bar Mitzvah Man.”

O’Quinn says he’d never even been to a Jewish coming-of-age celebration until he was invited to his agent’s daughter’s bat mitzvah — and it ended up being one of the best parties he’d ever attended.

Since then, the 27-year-old has booked gigs at several other kids’ bar and bat mitzvahs, where he typically dances, signs autographs and takes selfies with the kids and then schmoozes their parents, the sportscaster reports.

“I come out and they just go nuts,” he says. “After that, it’s like [I’m] a part of the party.”

And he enjoys the side-gig so much, he’ll happily play into overtime.

“A lot of times, I go and I stay longer than I’m supposed to because it’s so much fun,” O’Quinn told ESPN.

“The parents are partying with the kids and it’s a big festival. They’re letting loose, having a good time and the kids are having a good time … Honestly, it’s really nice to be a part of their culture and be down with them.”