be over the moon
US /bi ˈoʊvər ðə muːn/
UK /bi ˈoʊvər ðə muːn/

1.
sangat gembira, terlalu gembira, melompat kegembiraan
to be extremely happy or delighted about something
:
•
She was over the moon when she heard the news of her promotion.
Dia sangat gembira apabila mendengar berita kenaikan pangkatnya.
•
The kids will be over the moon if we take them to Disneyland.
Anak-anak akan sangat gembira jika kita membawa mereka ke Disneyland.