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Chikan (痴漢) is the Japanese term for non-consensual frotteurism which in common speech means groping. The men who commit such acts are also called Chikan, the term for women is chijo (痴女). Crowded trains are the most common target of chikan and chijo and majority of hentai that feature chikan take place on trains; therefore in AniDB terms, chikan would mean "groping on a train".
- Examples: Uba
Dildos - Vibrators
Yaoi refers to animes that portray gay (male/male) relationships and sex. Do not confuse with the Shounen Ai category under Drama/Romance, which only portrays boy/boy relationships, but generally not anything pornographic. This is real male/male porn.
Yuri referse to animes that portray lesbian (female/female) relationships and sex. Do not confuse with the Shoujo Ai category under Drama/Romance, which only portrays girl/girl relationships, but generally not anything pornographic. This is real female/female porn.