Dee Dee and Dexter in “Unfinished Business”

[singsong] I ate your cookies! I ate your cookies! [blows a raspberry, turns on one foot and sticks her costume's tail in Dexter's face; she then ballet dances until she suddenly notices one of her arms then the other bursting out of her rat costume, which appear to be abnormally large and elongated; she then bursts out of the rat costume as a whole and starts growing to an immense size, with Dexter watching in dismay] Ooh, [points at the city] what's over there? [walks to the city just as Dexter heads out of the front door to watch his giantess sister entering the city]

[while jumping for joy] At last! With my sister gone, my intellectual pursuits shall be uninhibited! [walks toward the house then closes the front door]