YKINOK
YKINOK is an acronym for "Your Kink Is Not OK" (used on Usenet since at least 1993), and is generally used in the BDSM sub-culture to deprecate those who condemn any sexual preferences other than those actual practices (not mere fantasies) which violate the principles of "Safe, Sane and Consensual" or "Risk Aware Consensual Kink." In other words, "YKINOK" is not actually commonly used to condemn other people's kinks, but is used to condemn those who condemn other people's kinks.
Read more about Ykinok.