Special "Andrew's cross" prop for BDSM role-play and/or dungeons. It only fits male avatars. Use only the Single 3 ("lying on the back") pose on the clickable part, when naked of course. The prop is not symmetrical because the pose itself isn't either.
When you merge the .world file, the object will be positioned at around X=0, Y=12, Z=0. There is a huge flashing sphere next to it so you can see it from a distance, which you should of course delete. The object is grouped together.