Ben Simmons Violently Dunks All Over Kids at Charity Basketball Event

WARNING -- If you come within 10 feet of Ben Simmons, there's a 100% chance he's gonna dunk on your ass ... and some kids in Australia found that out REAL QUICK!!

The NBA superstar attended the Helping Hoops charity basketball event in Melbourne on Wednesday ... and turned it into an absolute dunking CLINIC on the kids in attendance.

The vid is awesome ... Ben dribbles the ball up the court and puts his defender on a poster. The players lost their minds and Simmons playfully taunts his opponent for even jumping to block the inevitable dunk.

But, it's not like anyone was getting embarrassed by Simmons' rim shakers -- it looks like they WANTED the challenge of going face-to-face with the Sixers stud ... lining up to go against the 6'10" hooper.

Hey, it's not every day you can get dunked on by an All-Star ... can you blame 'em?!

By the way, Helping Hoops is all about supporting kids from underprivileged backgrounds through basketball -- basically, they run free hoops programs for more than 1,000 kids.