Japanese “secret” Button on Facebook

What it signals here

reaction meaning

Used to react to posts sharing personal news that feels special or exclusive, like pregnancy announcements in private groups.

comment use

Commented to acknowledge someone shared something private or to playfully tease 'I know something you don't know'.

boomer interpretation

Often misread literally as a Japanese symbol with no clear meaning — sometimes avoided due to unfamiliarity with kanji.

group use

Used in private Facebook groups to label posts as members-only sensitive content or group-exclusive announcements.

See it elsewhere