all by stuffing himself into an electric pencil sharpener 
(ROOT (PP (ADVP (DT all)) (IN by) (S (VP (VBG stuffing) (NP (PRP himself)) (PP (IN into) (NP (DT an) (JJ electric) (NN pencil) (NN sharpener)))))))
(ROOT (PP (ADVP (DT )) (IN ) (S (VP (VBG ) (NP (PRP )) (PP (IN ) (NP (DT ) (JJ ) (NN ) (NN )))))))