wears thin -- then out -- when there 's nothing else happening 
(ROOT (S (VP (VP (VBZ wears) (ADVP (JJ thin))) (, --) (RB then) (ADVP (RP out)) (, --) (SBAR (WHADVP (WRB when)) (S (NP (EX there)) (VP (VBZ 's) (NP (NP (NP (NN nothing)) (JJ else)) (VP (VBG happening)))))))))
(ROOT (S (VP (VP (VBZ ) (ADVP (JJ ))) (, ) (RB ) (ADVP (RP )) (, ) (SBAR (WHADVP (WRB )) (S (NP (EX )) (VP (VBZ ) (NP (NP (NP (NN )) (JJ )) (VP (VBG )))))))))