This one time my dad was talking about Karl Marx and said he was “born in Russia”, and I corrected him that he was born in Germany. And then he got argumentative and started spouting out other facts about “Karl Marx”, like that he overthrew the Czar and lead the Red Army…
Suddenly I realized… “Dad, you’re thinking of Vladimir Lenin, not Marx.”
My dad realized I was correct and replied: “Well of course you would know that.”
I was in lunch break at work and went in full rant mode when a coworker started spewing anticommunist WW2 myths of the asiatic human waves one rifle for two men variety. And another time a guy posted a meme on the offtopic/spam channel about how soviet citizens were starving during the space race.