Haha, I got a good laugh out of your post.
To answer your question, I can only speculate it was some sort of market test to see if anyone gets off on that. Some people are into feet, I guess they figure some might be REALLY into watches and might want some of that action?
I really don't know. I watched that part with bewildered amusement. Not that it took away from the shoot, it was just not something I got anything from.
I did however like DVES-348 with super slut Marina Muranishi where she repeatedly snorts cum through a straw. That was a market test I can get behind, even if there were not enough takers to warrant a follow up production.