slap boxing
Example:
The Cubans are the best boxers in the world -- THE BEST and if you go to Cuba to see them train what do you see? Nothing but hours and hours of slap boxing; they're having fun.
The Cubans are the best boxers in the world -- THE BEST and if you go to Cuba to see them train what do you see? Nothing but hours and hours of slap boxing; they're having fun.