may just scare the pants off you . 
(ROOT (S (VP (MD may) (ADVP (RB just)) (VP (VB scare) (NP (DT the) (NNS pants)) (PP (IN off) (NP (PRP you))))) (. .)))
(ROOT (S (VP (MD ) (ADVP (RB )) (VP (VB ) (NP (DT ) (NNS )) (PP (IN ) (NP (PRP ))))) (. )))