quickly becomes distasteful and downright creepy 
(ROOT (S (ADVP (RB quickly)) (VP (VBZ becomes) (ADJP (ADJP (JJ distasteful)) (CC and) (ADJP (RB downright) (JJ creepy))))))
(ROOT (S (ADVP (RB )) (VP (VBZ ) (ADJP (ADJP (JJ )) (CC ) (ADJP (RB ) (JJ ))))))