This episode is actually one of the best WOWP episodes. It was created extremely intelligently. The episode was brilliantly done because we have the main plot of Justin having to put up with this girl who believes that Justin likes her and so brings her home to embarrass. Little did Justin know at that time that Harper and Alex's brains have been messed up and now the two have formed one person!
This episode did something that not many episodes have done. The sub plot was actually important to the main plot! This episode was extremely funny and a must see for fans!