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「Say when.」？
Say when.<< Say when to stop?
レストランなどで飲み物を付いてもらっている時、もういいです。
That's enogh, thank you.
Enough.
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「because reasons」？
まぁ、まぁ、・・・いろいろあって。
- I do not need to give you any further explanation or reasoning for my decision. Used as a vague and dismissive retort meant to end an argument one cannot or does not want to provide evidence for.
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「We have a situation」？ << 深刻なイメージ
問題が発生。（客観的な時）
＝ We have a problem.
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「What's the occasion?」
何か(特別なことが）あるの？
* on occasion
- once in a while; occasionally; periodically.
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We have a situation.
What’s the matter?/ What happened?
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