The pizzeria the Greens order from is Mama-Roni's, the brand Cricket idolized in "Lil' Buddy".
In "Horse Girl", Tilly mentions she battled a horse before, which was part of her family right of passage as shown in "Cricket Versus".
Moral for Pizza Deliverance: Tina learned not to believe everything in movies and things are not as scary as she thinks.
Moral for Horse Girl: Tilly learned not to hide her hatred of things for the sake of trying to keep her family happy. Bill also learned there are some things that he likes but Tilly doesn't and vice versa, and she's okay with that.