That episode of All Grown Up where Lil blackmails her twin brother Phil to dress up and pretend to be her to tell off this nerdy boy (Geoffrey) who has a crush on Lil. Phil ends up liking the nerd-boy since they act similar and even starts liking that Geoffrey keeps calling him cute and other such things. Phil keeps pretending to be his twin sister to passively humiliate her since other students think Phil is Lil and Phil keeps crossdressing
in his sister’s clothes even when the nerd boy isn’t around, hell even at home. Lil finally gets up the courage to cut off Geoff, and Phil tries to still be bros with the dude, but since Phil’s no longer a “girl” Geoff basically goes:
This show was so weird. That was only a B-plot to an episode but still it was loopy one.
Doesn’t even stop there with these two:
>that episode where Phil gets a girlfriend and Lil gets jealous and tries to break them up
>that puberty episode where Phil finds out Lil has tits and tries to become a girl himself