Feyda is
Nikolai Gogols nickname for Fyodor Dostoevesky and Kolya is Fyodors nickname for Nikolai. No, not the authors, the characters from the
anime Bungo Stray
Dogs. The nicknames picked up great popularity and are even used to refer to the characters themselves in conversation.
Person A (Cultured Individual): Look at my shirt! It has Feyda and Kolya on it!
Person B (Uneducated Swine): Why
don't you just call them Fyodor and
Nikolai?
Person A: Because using the nicknames makes them seem
gay.