What a poor guy

There is a poor guy,my coworker.He is a tester of our project.Only thing he do is click his mouse day by day.In usually,he is friendly,in the other word ,we can say,he is look like nice.But,just as he a "nice" man,did a bad thing today:he didn't know how to test a feature,then he think that is a bug and let me help check it,when I discuss it with him.He talk with me rudely,just like he know everything.what a poor guy,I think I annoyed at that time,but after a moment,I told myself,"Hi man,why are you angry with him,he is a poor guy,angry with a man like him is harmful your health.It's not that worthy".So,now I'm happy Eric.