What does 〇〇〇〇 mean when combined with おじさん？


I saw the term 〇〇〇〇おじさん written in a chat profile. What does the 〇〇〇〇 mean?




〇〇〇〇 implies that various words are applied to 〇〇〇〇. For example, he might say
映画好きのおじさん、公務員のおじさん、車が趣味のおじさん and so on. But he doesn't say it concretely
because he would just tell that he is a middle aged man or the word is one
that he doesn't want people to know such as 変態, ドスケベ.




〇〇 is used to mask/censor part of a word.

  * [Why censor this one kanji?](https://japanese.stackexchange.com/q/11810/5010)
  * [What is the meaning of 金〇](https://japanese.stackexchange.com/q/58279/5010)

In contexts related to otaku-ish hobbies, Xおじさん is recently used to form a
slang word that means "(stereotypical) middle-aged male X fan". The nuance is
more or less similar to
[大きなお友達](https://en.wikipedia.org/wiki/%C5%8Ckina_otomodachi). For example
[ガルパンおじさん](https://dic.nicovideo.jp/a/%E3%82%AC%E3%83%AB%E3%83%91%E3%83%B3%E3%81%8A%E3%81%98%E3%81%95%E3%82%93)
(fans of [_Girls und Panzer_](https://en.wikipedia.org/wiki/Girls_und_Panzer))
and
[アイカツおじさん](https://dic.nicovideo.jp/a/%E3%82%A2%E3%82%A4%E3%82%AB%E3%83%84%E3%81%8A%E3%81%98%E3%81%95%E3%82%93)
(fans of [_Aikatsu!_](https://en.wikipedia.org/wiki/Aikatsu!)) are the two
best-known examples of this, but there are other minor 〇〇〇〇おじさん's. Since there
are exactly four circles and there is no particle between `〇〇〇〇` and `おじさん`, I
feel he may be referring to either of these two works. Or else, he may be just
implying he has some otaku-ish hobby.

