Toward the end of Ace Ventura, Ace pretends to be severely mentally ill to get into a mental intistute. Part of his pretending is wearing a tootoo and claiming to be a woman. Along with crazy hair and other insane mannerisms.

In the episode No One Can Hear You (S3E15) Jake has a very bad concussion. Finn tries to fix him later by hitting him again. Jake goes "im a woman im a woman" for a sec because he got hit so hard in the head.

This is transphobic because it equates trans identities with mental illness.