Do You Know What's on Your Back?

There's a huge ensemble of people who we see. There are the waiters who, someone who keeps drinking the wine,. And there's the kind of owner who's trying to work out who's been at the wine. Gradually everything everyone is drawn into the restaurant. The tour party of Americans who we've been following end up there. Ulo ends up there. It's dancing on the dance floor. A column in which people keep walking into. Do they have like wet paint on them or are they spiky? How does it mark a woman's back? I don't think it doesn't really make sense...