Sentence:  in this variation on Superbad's wild night of transgression, downshifting the age of the protagonists from teen to <WSD>tween</WSD> actually only enhances the stealth, wide-eyed innocence that secretly drives this genre of pre-college hedonism. 
Meaning of the word marked with <WSD> tags:  A child, usually a girl, in the age range between young childhood and adolescence, normally between 10 and 12 years of age.