"One of the most important episodes we've done; it's a touchstone, in a way, because we really get to see inside Tina's fantasy life. We started with that in 'Crawl Space' — she's having sexual dreams about zombies, which she gets confused with her grandparents. But we come back to her fantasy life with this Erotic Friend Fiction, which was so satisfying and important for us. The fantasy life of our characters is where we get to be more silly. In a grounded show, you can't take advantage of animation the way you might. You don't have broad, crazy, physical things happening that can't happen in real life: If you fall down it hurts, no one can fly, things like that. But in their fantasies, these characters can go nuts, and we've always had the pleasure of popping into their daydreams and nightmares. Going even further with that and having Tina write her shit down in these notebooks — and to see the stack of them, and how deep and long this goes — was really important for us."