a vat of failed jokes , twitchy acting , and general boorishness 
(ROOT (NP (NP (DT a) (NN vat)) (PP (IN of) (NP (NP (VBN failed) (NNS jokes)) (, ,) (NP (JJ twitchy) (NN acting)) (, ,) (CC and) (NP (JJ general) (NN boorishness))))))
(ROOT (NP (NP (DT ) (NN )) (PP (IN ) (NP (NP (VBN ) (NNS )) (, ) (NP (JJ ) (NN )) (, ) (CC ) (NP (JJ ) (NN ))))))