This is like playing a mini game but doesn't have a specific name for it. If you observe both videos you will find that this was done in the end of the match. People do this when they have no hope of winning. Though it not very sportive it is still done. Hope your query is cleared.
In Italy it is friendly called "around the world".
Is it possible to be played by 2 or more player.
I believe there are no official rules for this kind of matches/points.
A Particular version if surviving around the world where many players (more than 2) starts to play in order one shot each moving to the part of the table of that shot (if there are odd numbers of player thay have to move from one side to the other, otherwise thay can hit from the same part of the table) and who fails is eliminated. The game continues until there are no two players who play a traditional point in the final