last night while playing with sean,i asked him to stop singing twinkle2 little star(just like he always do,he likes to stop us from singing his favorite song instead he sang along).he cried out suddenly and told he sing terribly and not to sing it again even i begged him to do so.explaining to him that i was just kidding to him,he sang like an angel but he still refuse to sing.he is such a cheerful kid, this is the 1st time i saw his disappointment .wonder why he think too much....just a 2yrs+ kid