Separate But Equal is A Season 4 All Grown Up! Episode.
Plot[]
As Phil and Lil's birthday nears, the twins realize that they are more different than they think. Phil is getting to like girls, and Lil is wearing a training bra. Realizing this, they decide to have separate parties for the boys and the girls as they try to out-prank each other. Meanwhile, Dil is worried that he might turn into a vampire after getting bit by a vampire bat.