Yikes, it's weird that so many people think STAG just means "porn" disks. No, no, no! The "STAG" disks said STAG very cleary (and very noticibly) during loading. They were made up of looping video clips from porn.
After doing a little research I've found that there are seven Stag disks 1-2-3-4-5-6 and Extras. They all do the same thing, but with different clips. I've even managed to grab hold of all of the adfs, too.
So for anyone who's interested and for preservation, I've put the entire series into the Zone!
(It should clear things up for people who have never seen them, too!)