(as) proud as a peacock
US /əz praʊd əz ə ˈpiːkɑk/
UK /əz praʊd əz ə ˈpiːkɑk/

1.
매우 자랑스러워하는, 자만심이 강한
very proud of oneself, often in a way that is considered arrogant or boastful
:
•
After winning the competition, he was as proud as a peacock.
대회에서 우승한 후, 그는 매우 자랑스러워했다.
•
She walked onto the stage, as proud as a peacock, to accept her award.
그녀는 매우 자랑스럽게 무대에 올라 상을 받았다.