What is "slapboxing"

Slapboxing is a physical activity somewhat simulating boxing, where open hands are used in lieu of fisticuffs. This quasi-martial art form, at an intersection between sparring and fighting, is usually performed in an ad hoc or informal manner, or when boxing protective gear is unavailable. Although a popular pastime in some circles, it is generally not considered a competitive sport, but rather a game or training drill.