From Longman Dictionary of Contemporary Englishdo/show your stuffdo/show your stuffinformalSHOW OFF to do what you are good at when everyone wants you to do it Come on Gina, get on the dance floor and do your stuff! → stuff
Examples from the Corpus
do/show your stuff• I should go and do my stuff.• Having the appetite to get out there and do your stuff is the key factor for an international player.• It's amazing to watch him do his stuff on the basketball court.• At times, it seems that Benson is unable to simply roll the camera and let them do their stuff.• Derek Jefferson had abandoned his executive suit for a caddie's bib and was ready to do his stuff again.• Afterwards, I stood up to do my stuff. 