strut one's stuff
verb1
Idiomatic To behave or perform in a showy or ostentatious manner, as if to impress others; to show off.
- When I'm out walking, I strut my stuff / Yeah, and I'm so strung out / I'm high as a kite, I just might / Stop to check you out1983, Gordon Gano, “Blister in the Sun”, in Violent Femmes, performed by Violent Femmes: