The adjective form of yippee, a yippitty time is a fun and happy time during which you may have said "hooray", "this is great", or indeed "yippee!" in an excitable manner.
First we went to the park and then we had an ice cream and then we had a dance and then made silly faces, and generally had a wonderfully yippitty day,
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by SFPilot2 July 11, 2008