When a couple are taking pictures of each other, especially with one camera. One takes a picture of the other in front of something, then they shuffle together, exchange the camera and swap positions. They end up with two pictures, neither of which includes both of them.
Hang on, let me help out those two doing the couple shuffle over there.
the "dance" you do when you and someone else just start dating. Usually done next to a car or a house door. Maybe you rock your body or you scuff your feet around.
Wade "How did last night go with the new chick"
Eric "Great, I got a kiss"
Laramie "Yeah, took him ten minutes. They were doing the New Couple Shuffle"