The Persimmony Glitchett books are an in-universe example. I don't know how much more I can take. Arthur's gasp and screams. Located behind the toy department. You'll keep this between us right? After about a solid gold minute of digging.
Perhaps Francine moreso, because holding disdain for wearing dresses - and, really, anything that's associated with her respective gender - is a part of her character.
Francine's Sexy Booty (Thevideotour1's version)
S20's "Buster's Second Chance" has Buster dreaming that he goes back in time to the moment where he didn't flunk his childhood I. The episode features a rival summer camp. Several of the books are badly written and researched and the dolls are all alike aside from their dresses and names. Have a Happy Pretend Holiday! Pair that with the fact that he is trying to convince his much whiter friend that the leader of Nazi Germany, and perpetrator of the holocaust, has something to say that will seemingly change his life for the better. The EpisodeTitleCardsan open acknowledgement that younger viewers can't quite read them yet. In "Cast Away", Kate is sick, but only for one scene.