Headcanoning both sets of Pines twins as trans has so much angst potential because like imagine being Stan Pines, a man who was so close with his twin brother they chose matching names, and almost thirty years after losing your brother and desperately fighting to bring him back you meet your grand niece and nephew, Mabel and Mason Pines, a set of twins who, just like you and your brother chose their own names and who, just like you and your brother, chose matching ones.
There's a fine line between pectorals and tits and he has undoubtedly crossed it.
"Oh these twins are different genders but they look similar so clearly they're actually identical and one of them is trans" WRONG! They're fraternal twins who are both trans and purposefully transitioned in a way to make them look more similar because they thought it'd be fun (and they were right!). I am objectively correct about this.
Was watching TNG with my dad and during one of the poker scenes he (while referring to Riker) said something like "I don't understand how anyone could call someone they've slept with "Sie" (polite/professional you in German)" but Worf was on screen at the time so it somehow didn't really click that he was talking about Deanna and for a few baffling seconds I lived in a world where my dad had somehow misconstrued Worf and Riker as having canonically slept with each other.