as funny for grown-ups as for rugrats 
(ROOT (ADJP (ADJP (RB as) (JJ funny)) (PP (IN for) (NP (VBN grown) (HYPH -) (NNS ups))) (PP (IN as) (PP (IN for) (NP (NNS rugrats))))))
(ROOT (ADJP (ADJP (RB ) (JJ )) (PP (IN ) (NP (VBN ) (HYPH ) (NNS ))) (PP (IN ) (PP (IN ) (NP (NNS ))))))