Friday Night Funkin launched in 2020 as an open source rhythm game and spread quickly through Newgrounds, YouTube and TikTok, with Boyfriend as its blue haired protagonist who battles opponents through music. His short vocal sounds, performed as melodic beeps and simple words, became easy to lift for edits because each one is brief and expressive on its own. Fans began isolating single reactions like this yeah for soundboards and memes, using it outside the game as a general yes that other players recognise instantly from the art and voice style.