The real life name for Sailor Moon as she is known by the poor saps who have only seen the horrendous english dub. Use of this forbidden word among rabid^H^H^H^H^Hdevoted anime fans will likely cause shudders of revulsion and disgust (much like referring to a unix command prompt as "DOS" in a LUG may offend some). Real Fans call her Tsukino Usagi.
For another word that should be avoided among anime fans, see cartoon.