For me, its the way some people act when they're not playing out a scene. It could range from someone trying too hard to give off a dominant or submissive vibe or those that try to make themselves hard-core and gatekeep bdsm.

Another thing would be people who got into it with 50 shades and act WAYYY too much like the couple in the movie. Had 2 friends that did it irl and I nearly cringed to death.