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.
Elenco: Elizabeth Daily , Nancy Cartwright , Kath Soucie , Cheryl Chase , Cree Summer , Dionne Quan , Tara Strong .