Idiom: On cloud nine (meaning, examples, pronunciation) - YouTube
2021/02/08 ... "Be on cloud nine"means "to be extremely happy."Example #1: Peter was on cloud nine for months after he won the lottery.
https://www.youtube.com/watch?v=zK2sHnqRkM4On cloud nine meaning | Learn the best English idioms - YouTube
2016/11/02 ... ... , we explain the meaning of the idiom "On cloud nine". Learn the top idioms with Kaplan and speak like a native English speaker ...
https://www.youtube.com/watch?v=5sGNKQMbwJE