(as) proud as a peacock

US /əz praʊd əz ə ˈpiːkɑk/
UK /əz praʊd əz ə ˈpiːkɑk/
"(as) proud as a peacock" picture
1.

孔雀のように誇らしげな, 非常に誇りに思う

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.
コンテストで優勝した後、彼は孔雀のように誇らしげだった
She walked onto the stage, as proud as a peacock, to accept her award.
彼女は孔雀のように誇らしげにステージに上がり、賞を受け取った。