This is probably what happened- Ice King: "I'm bored Gunter. Ooh, I know, I'll write a story! But of what?" Guneter: *Wonk* Ice King: "Good idea, Gunter! I'll base it on my own life and experiences! Ooh, but I don't want to get sued for libel. ...If I gender-swapped everyone, no one could ever make the connection!" Ice King writes and writes and writes... Ice King: "I'm so lonely, Gunter... Hey, Fionna and Cake are girls, it sure would boost my confidence if they thought I was dreamy. Which I totally am anyway..." Gunter: *Wonk? Wonk wonk-wonk!* Ice King: "Oh, get your head out of the gutter, Gunter. Heh. 'Gutter Gunter.'"