To be sitting on cloud nine phrase
To be showing great or sheer happiness.
Mary's been sitting on cloud nine ever since her boyfriend proposed to her.
She's sitting on cloud nine as she has won a car in a lottery.
Her crush has just admitted he also loved her. She's sitting on cloud nine.
To make someone feel more confident or happy, especially when they thought that they can't achieve what they want
Happy or cheerful; in a good mood
To smile broadly
The exact allusion of "nine" in this term is unclear, and different figures, especially seven (perhaps alluding to seventh heaven), are sometimes substituted. This expression dates from the mid-1900s.
someone believe that they are allowed to do whatever they want in their own home
It is always advised that wherever you go, a man's home is his castle