That is a kid :^)
All the Diana F+ interchangeable lenses are for medium format Diana Cameras. There is a Diana 35mm camera but with a fixed lens. You can actually use 35mm film in the medium format Diana but you won't get the "whole" picture. The lenses I've been using are meant for medium format but they can be used on a Nikon SLR.
I have "modified" my lenses to get that exaggerated vignette you see in the above picture. Click on the picture to see a "sneak peek" at the hands-on gallery. Nothing difficult to do and it really adds to the image. Nikonrumors will be giving away some of these lenses so stay tuned to the blog for details!!!