Not sure I'd say it was terribly successful, if you care about consumption for the sake of it (I don't); it was vomited into a toilet pretty quickly. But seeking just humiliation? Yeah, got it. And an intense memory of a scene for years.

I'm not a doctor, but from what I've gathered the big risk is catching a disease; what you could catch from your own you already have. Assume any disease that could be spread by blood to blood contact *might* be possibly transmitted. With your own, it's much safer - but I'm sure there are still risks, especially if you're bleeding somewhere.