you might as well be watching a rerun 
(ROOT (S (NP (PRP you)) (VP (MD might) (ADVP (RB as) (RB well)) (VP (VB be) (VP (VBG watching) (NP (DT a) (NN rerun)))))))
(ROOT (S (NP (PRP )) (VP (MD ) (ADVP (RB ) (RB )) (VP (VB ) (VP (VBG ) (NP (DT ) (NN )))))))