Mike Tyson really was enjoying himself on his daughter's hoverboard ... until he suddenly wasn't on it anymore.
The former undisputed heavyweight champion of the world fell. And he fell hard.
Apparently he's OK. Tyson posted a video of himself laughing and clapping while riding the electronic contraption -- as well as the wince-inducing mishap at the end -- Tuesday on social media.
"Seemed like a good idea to ride my daughter #milantyson #cyboard #hoverboard but guess not..." Tyson tweeted.
Yeah, guess not.