Meaning of "マスオさんする"


What is the meaning of "マスオさんする" in the following self-introduction extract?

> 家は表参道と近所ですが、特段お金持ちなわけではありません、妻の実家でマスオさんしてます。

My translation attempt:

> I live near Omotesando, but I am not rich: I "do M. Masuo" at my wife's
> parents' place.




According to [Zokugo-dict](http://zokugo-dict.com/31ma/masuosan.htm):

> Masuo-san refers to the husband of Sazae-san in the popular anime "[Sazae-
> san](http://en.wikipedia.org/wiki/Sazae-san)", Fuguta Masuo. Masao-san lives
> together with Sazae-san and their parents at their parent's home, and it's
> come to mean a person who lives at their wife's parents' home.
>
> Furthermore, it's become used in a broader sense to refer to a son-in-law
> taken into a family (`婿{むこ}養{よう}子{し}`; in the Anime Masuo keeps his Fuguta
> name, so isn't a `婿養子`.)
>
> In particular, because in 1989 these kind of males increased, the expression
> "Masuo-san" became a trending phenomena.




According to [Zokugo-dict](http://zokugo-dict.com/31ma/masuosan.htm):

> Masuo-san refers to the husband of Sazae-san in the popular anime "[Sazae-
> san](http://en.wikipedia.org/wiki/Sazae-san)", Fuguta Masuo. Masao-san lives
> together with Sazae-san and their parents at their parent's home, and it's
> come to mean a person who lives at their wife's parents' home.
>
> Furthermore, it's become used in a broader sense to refer to a son-in-law
> taken into a family (`婿{むこ}養{よう}子{し}`; in the Anime Masuo keeps his Fuguta
> name, so isn't a `婿養子`.)
>
> In particular, because in 1989 these kind of males increased, the expression
> "Masuo-san" became a trending phenomena.

