In Australia, apparently, they let this stuff slide, so to speak. A federal policy of providing insurance for this type of injury for civil servants gives new meaning to the term "safe sex."
I'm reasonably certain that most US jurisdictions would take a firmer stance that incidents like this are not work-related, and thank goodness for that. I can only imagine what one of those GSA trips would cost under Australian rules.
We wouldn't insure a card-playing accident, either, even in Vegas.