watch , giggle and get an adrenaline boost 
(ROOT (S (VP (VP (VB watch)) (, ,) (VP (VB giggle)) (CC and) (VP (VB get) (NP (DT an) (NN adrenaline) (NN boost))))))
(ROOT (S (VP (VP (VB )) (, ) (VP (VB )) (CC ) (VP (VB ) (NP (DT ) (NN ) (NN ))))))