S&M is an older abbreviation for sadism and masochism. Generally, it is used to refer to consensual sexual sadism and masochism: the infliction of pain as a form of sexual pleasure. In serious discussions of such on Usenet, the Web, and other forums, the term "BDSM" appears to have largely eclipsed "S&M". Offline, however, "S&M" remains common in slang, and in fetish erotica marketed for BDSM non-practitioners.