I'm not sure if my comment is whoosh, but just in case; it's the transliteration of the letters in the picture if you read them as cyrillic letters, highlighting that they should be understood as faux-cyrillic instead
Ah, gotcha. Yeah, it was definitely faux cyrillic. It's a reference to the Will Riker from TNG playing a sour note on his trombone that I'm known for posting (and now get summoned to post) when someone gets what's coming to them.