do your stuff
do (one's) stuff
To do something that one is known to be skilled at. Maria is usually nervous before getting on stage, but once she goes out there and does her stuff, she's great—everyone always loves her presentations. OK, I'll get out of the way so you can do your stuff in the kitchen.
do your stuffINFORMAL
If you do your stuff, you perform an activity successfully in the way that people expect. Once I get on the pitch I know I can do my stuff. All that was left was to plant the roses and wait for nature to do her stuff.
do your stuffperform a task at which you are particularly skilled or which is in your particular area of expertise.
2005 The Star (South Africa) By now, he recommended that our entire house needed total rewiring, which he might as well do, he explained. I nudged my husband when he began to object. ‘Let the expert do his stuff,’ I hissed.