This shot is from the opening scene of the movie.
In the opening party, Vera and I spin round and round holding hands with each other as confetti falls. In one of our pre-pro meetings, Michelle and I tested out tying a belt around her and I and then spinning to see if a) it looks like we were spinning with the other person and b) if we'd fall down. It looked great on the little 5D we tested it out with.
On the day, a very brave grip tied both of us to Michelle with a rope. Luckily, no one fell down. But a lot of that laughter is real because there's nothing sillier than being tied to someone with a rope.