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

1.
orgulloso como un pavo real, muy orgulloso
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.
Después de ganar la competición, estaba orgulloso como un pavo real.
•
She walked onto the stage, as proud as a peacock, to accept her award.
Subió al escenario, orgullosa como un pavo real, para aceptar su premio.