strut (one's) stuff
To act or perform with brazen, ostentatious confidence. I swear these dogs know they're being judged—look how they strut their stuff! After a year of training, he went up onto the stage to strut his stuff.
strut one's stuff
Sl. to walk proudly and show off one's best features or talents. Get out there on that stage and strut your stuff! I'm going to strut my stuff and become a star.
strut (one's) stuff
Slang To behave or perform in an ostentatious manner; show off.