This is a passage from a novel:
He checked his watch. "We'll be fine--don't worry about us. Just do what you have to do. Rock your meeting."
Neal said the above. He is Georgie's husband. The setting is outside their home. Neal is about to leave with the kids to vacation, but Georgie can't come because something came up at work. Their about to leave and Neal said to Georgie to "rock your meeting". What does that mean?