We’ll post this here, because Mike is an actor, among other things.
In the video, Mike is on a plane from San Francisco to Florida. An inebriated man asks The Champ for a selfie, which he obliges. However, the pissant began accosting Mr Tyson, who was sitting in front of him, and could not leave well enough alone.
According to multiple sources (well, YouTube comments, really), there are parts of the video missing, which had the drunk become increasingly belligerent towards Tyson, who himself is teetotal, ultimately throwing a water bottle at him.
When the weapon was thrown at Tyson, he then elected to give the man a free life lesson, as demonstrated in the video above. Tyson was removed from the plane, however no charges have been pressed.