does n't mean you have to check your brain at the door 
(ROOT (S (VP (VBZ does) (RB n't) (VP (VB mean) (SBAR (S (NP (PRP you)) (VP (VBP have) (S (VP (TO to) (VP (VB check) (NP (PRP$ your) (NN brain)) (PP (IN at) (NP (DT the) (NN door)))))))))))))
(ROOT (S (VP (VBZ ) (RB ) (VP (VB ) (SBAR (S (NP (PRP )) (VP (VBP ) (S (VP (TO ) (VP (VB ) (NP (PRP$ ) (NN )) (PP (IN ) (NP (DT ) (NN )))))))))))))