"What am I doing here?"/ Excuse yourself


**Question 1**

I was curious about the phrase "What am I doing here?" in Japanese. I know
that if you want to ask someone "what is he/she doing here?", it should be
like

> ここで何をしているんの？

However, how can you make it refer to yourself? Will adding 私は at the
beginning be enough?

Furthermore, in this context what is the different between

> 何 **を** しているんの？

and

> 何 **が** しているんの？

* * *

**Question 2**

I was watching some drama and I heard the character say something, which
implies that he would like to excuse himself (based on the English subs). I
couldn't clearly hear what he said, but it is something similar to

> つりします

What is the phrase that he said exactly?




You, very plainly, would not say 何がしているの, only 何をしているの. Furthermore,
colloquially it can become 何をしてんの, but never 何をしてるんの. I doubt you would really
use the phrase to refer to yourself.

What you heard as つりします was probably 失礼{しつれい}します.

