what's that called again?

when you have brain damage and laugh when it's not appropriate? i think that's what's wrong with Ru Feng, b/c the boy just doesnt seem to register that other people are grieving Tian Qi. but he's adorable and is usually dressed like he just stepped out of Willy Wonka's chocolate factory, so i'll give him a pass. Still waiting for Zhi Qing to wake up and realize there was something seriously wrong with her relationship w/ Tin Qi.