Ballbusting

Form of consensual adult play or fetish activity that involves the application of force, typically through kicks or kneeing, to the male genitalia, specifically the testicles (balles). This activity is often associated with BDSM (Bondage, Discipline, Dominance, Submission, Sadism, and Masochism) practices and is typically engaged in by consenting individuals who derive pleasure from the physical and psychological aspects of the experience.