on cloud nine
Blissfully happy, as in Ever since he proposed to her, her parents have been on cloud nine. The exact allusion of nine in this term is unclear, and different figures, especially seven (perhaps alluding to seventh heaven), are sometimes substituted. [Colloquial; mid-1900s]
|an extraordinary or unusual thing, person, or event; an exceptional example or instance.|
|a fool or simpleton; ninny.|
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