a laughable -- or rather , unlaughable -- 
(ROOT (ADJP (ADJP (DT a) (JJ laughable)) (, --) (CC or) (ADVP (RB rather)) (, ,) (ADJP (JJ unlaughable)) (: --)))
(ROOT (ADJP (ADJP (DT ) (JJ )) (, ) (CC ) (ADVP (RB )) (, ) (ADJP (JJ )) (: )))