自宅警備隊 自宅警備員
「自宅警備隊」 "home security force", 「自宅警備員」 "home security guard", and variants.
Euphemism for NEET and/or hikikomori.
One variety takes the gag to the extreme in a parody of SWAT teams, complete with tactical clothes such as load bearing vests, helmets, etc.; see ja.wikipedia.
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