show off
US /ʃoʊ ɑːf/
UK /ʃoʊ ɑːf/

1.
presumir, lucirse, alardear
to behave in a way that is intended to attract attention and admiration, and that other people often find annoying
:
•
He's always showing off his new car.
Siempre está presumiendo de su coche nuevo.
•
She likes to show off her knowledge.
Le gusta presumir de sus conocimientos.