Linguistic joke

Did you know that the Russian word for "sock" is "no sock"?

This is very old joke. When someone says something like that online, everyone starts posting "This is bayan!" meaning "Where have you found this old beardy joke? I've retweeted it twice already".

Bayan is sort of button accordion. Maybe this word is used because of the sound it makes: stretchy.

You could also not write "bayan!" but draw Russian Emoji ASCII picture :|||: (or :||||||||||: in critical situation).