In fact, it was even worse than you might expect. Embiid takes it pretty easy at the beginning, casually passing to a teammate, but when the ball soon finds its way back to him, he bounces the ball off a defender's head (which in NBA Street was called an "off the heezay") as the crowd of onlookers laughs and groans. And as if that wasn't brutal enough, Embiid then windmill dunks on him. It's pretty brutal.
As much as you have to admire the courage (read: hubris) of even attempting to go up against an NBA All-Star, there was no way anyone came out of this looking good. Except for Joel Embiid. Who looked like an NBA All-Star playing a pickup game.
Let this be a lesson: Don't compete against professional athletes, lest you become internet fodder.