Meaning of “Mugon no Kitaku(無言の帰宅)”

“Mugon no Kitaku(無言の帰宅)” means go home feet first.
It meas returning home in a deceased state. It is a euphemistic way of expressing death.
“Mugon(無言)” means silent, Kitaku(帰宅) means returning home.

It’s a common expression that has been used for a long time, but there seem to be some Japanese people who don’t understand its meaning. Just recently, a post using this expression became a hot topic because many people commented on it without actually understanding its meaning.

Example Conversation

A: I heard it was “Mugon no Kitaku(無言の帰宅)”, but maybe he’s keeping quiet because he’s hiding something.
B: Dude… are you seriously saying that? It means he passed away…

A: 無言の帰宅になったらしいけど、何かやましいことがあるから喋らないんじゃないかな。
B: お前…まじでいってるの？亡くなってることだよ…。