For the uninitiated, ballbusting is a form of consensual impact play that involves kicking or hitting a person's testicles. The activity is often associated with the BDSM (bondage, discipline, sadism, and masochism) community and is typically practiced between consenting adults. While it may seem extreme or even taboo to some, proponents of ballbusting argue that it can be a safe and enjoyable way to explore one's boundaries and experience intense sensations.