If I Ever Have A Like Combined Dnd Backstory With Anoyher Player This Is It. - Tumblr Posts

Cartoon with identical looking boy/girl twins that's self-aware of the fact this implies one is trans, and keeps the audience guessing as to which one it is.

The girl laments that her friends are buying bras and her chest is still flat. The boy keeps his t-shirt on the whole time at the beach. Neither of them like using public toilets. The girl always seems to be eating pickles. The boy is giving himself an injection... But it turns out he's diabetic and it's his insulin. Oh look, one of them has a trans flag pin! But so does the other one, because the cis sibling is a very enthusiastic ally.

Bonus points if the twins are aware of this and confusing people on purpose.