mostly to the tongue-in-cheek attitude of the screenplay 
(ROOT (ADVP (RB mostly) (PP (IN to) (NP (NP (DT the) (NML (NML (NN tongue)) (HYPH -) (PP (IN in) (HYPH -) (NP (NN cheek)))) (NN attitude)) (PP (IN of) (NP (DT the) (NN screenplay)))))))
(ROOT (ADVP (RB ) (PP (IN ) (NP (NP (DT ) (NML (NML (NN )) (HYPH ) (PP (IN ) (HYPH ) (NP (NN )))) (NN )) (PP (IN ) (NP (DT ) (NN )))))))