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I've seen this in several places. Is that a set phrase? What does that mean?

I know that it's a way of saying "Goodnight," but the NASA胃 doesn't make sense.

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Frankly, do you really expect it to make more sense to us with less context than you have? – Dave Jul 31 '11 at 8:29
up vote 5 down vote accepted

胃 is read い and NASA reads "なさ" so what this actually says is おやすみなさい ("Good night"). However, I don't know wether this is a typo or an intentional misspelling.

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I think this is a pun. – language hacker Jul 30 '11 at 19:58
It's probably an intentional phonetecism. In Osaka-ben, it's common to use や in place of だ. So 「だけど」 often becomes 「やけど」. So sometimes I write 火傷 【やけど】 in the middle of a sentence to show this. Same with 輩 【やから】 for だから. – istrasci Jul 31 '11 at 5:22
It is obviously a pun (or an incredibly inept non-native typist), and a rather lazy one at that (unless the context really made an association with NASA or stomach matters meaningful). As @Istrasci points out, it is quite common in some circles (let's say urban kansai teenagers) to make up random ateji for common words. I have rarely seen romaji mixed-in but it reeks of a certain lack of imagination (for something that is not incredibly imaginative in the first place). – Dave Jul 31 '11 at 8:27
Maybe some kind of gyarumoji? – Karl Knechtel Aug 20 '11 at 18:33
The final shuttle flight before the fleet was retired was around this time. There was some sense that America was no longer the pioneer in space. So, so long NASA. – Louis Oct 9 '11 at 3:43

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