fan service
n.— «Fan service is anything in media that is there because the creators think it will please the fans, not because it advances plot, theme, character, or any other overall value of the work.» —“Re: What’s a Fan Service?” by Slithy Tove (slithy@pobox.com) Usenet: rec.arts.anime.misc Dec. 1, 2000. (source: Double-Tongued Dictionary)
Further reading
The adjectives canine and feline refer to dogs and cats. But how does English address other groups of animals? Plus, cabin fever has been around much longer than the current pandemic. That restless, antsy, stir-crazy feeling goes back to the days...
Cat hair may be something you brush off, but cat hair is also a slang term that means “money.” In the same way, cat beer isn’t alcoholic — some people use cat beer as a joking term for “milk.” And imagine walking on a...