Yunho : Junsu, because he can create a cheerful atmosphere no matter when.
Junsu : Jaejoong, because he has great sympathy/empathy.
Jaejoong : Changmin, because he's the youngest, so he's the most obedient no matter what I tell him (laughs)
Changmin : Yuchun, because he always eats supper with me.
Yuchun : Yunho, because as the leader, he has to keep everything together
Once, Jaejoong convinced Changmin and Junsu to go inside their van and locked Yuchun out of the van. Yuchun came and knocked but the three just laughed and laughed inside. Yuchun called them but the three won’t answer him. He knocked and knocked but the three continued on laughing inside. Yunho came out of the apartment and knocked ONCE. The three stopped laughing and open the van immediately.