别把重要任务交给那个轻浮的人，他只会把事情搞砸。

Don't assign important tasks to that ___featherhead, he'll only mess things up.

我的弟弟真是个没头脑的人，总是想些愚蠢的主意。

My little brother is such a ___featherhead, always dreaming up silly ideas.