solondz may well be the only one laughing at his own joke 
(ROOT (S (NP (NN solondz)) (VP (MD may) (ADVP (RB well)) (VP (VB be) (NP (NP (DT the) (JJ only) (NN one)) (VP (VBG laughing) (PP (IN at) (NP (PRP$ his) (JJ own) (NN joke)))))))))
(ROOT (S (NP (NN )) (VP (MD ) (ADVP (RB )) (VP (VB ) (NP (NP (DT ) (JJ ) (NN )) (VP (VBG ) (PP (IN ) (NP (PRP$ ) (JJ ) (NN )))))))))