Risk-aware consensual kink (RACK, also risk-accepted consensual kink) is an acronym used by some of the BDSM community[1][2] to describe a philosophical view that is generally permissive of certain risky sexual behaviors, as long as the participants are fully aware of the risks.[3] This is often viewed in contrast to safe, sane, and consensual which generally holds that only activities that are considered safe, sane, and consensual are permitted.[4]