Expansion and politeness of 飲んじゃいなよ


Dad says he'll take his daughter out in an hour, after having a beer. The
daughter says:

> 「そんなのあと一時間もかかんないじゃん。ぐ～～っと飲ん **じゃいなよ** 」  
>  After one like that it won't take even an hour will it? Gulp it down in one
> go.

I'm assuming the implication is that the beer is small (it doesn't say).

I'd like to confirm that I've interpreted 飲んじゃいなよ correctly. I think this is a
contraction of 飲んでしまいなさいよ. Is this correct？

I'm a little dubious because I didn't think なさい was an appropriate way for a
child to speak to a parent.




As you stated,

> 「飲{の}んじゃいなよ」＝ 「飲んでしまいなよ」 or 「飲んでしまいなさいよ」

The first one uses a colloquial contraction, but all three mean:

> "Just drink it up!"

It is perfectly natural for a child to say this to his/her father as it is a
friendly kind of imperative and **not** a strict order. In nuance, it is
actually close to being a friendly request rather than an "order".

Finally, the line says nothing about the size of the beer even though it is
clear that there is not a whole case sitting in front of Daddy.




As you stated,

> 「飲{の}んじゃいなよ」＝ 「飲んでしまいなよ」 or 「飲んでしまいなさいよ」

The first one uses a colloquial contraction, but all three mean:

> "Just drink it up!"

It is perfectly natural for a child to say this to his/her father as it is a
friendly kind of imperative and **not** a strict order. In nuance, it is
actually close to being a friendly request rather than an "order".

Finally, the line says nothing about the size of the beer even though it is
clear that there is not a whole case sitting in front of Daddy.

