found this $5 packer and thought i'd share, can also be brought with briefs or boxerbriefs
http://www.andrewchristianshop.com/SJ-Active-Shaping-Tech-PID13412-8071.aspx (http://www.andrewchristianshop.com/SJ-Active-Shaping-Tech-PID13412-8071.aspx)
http://www.andrewchristianshop.com/Shock-Jock-Flirt-Boxer-PID14909-9240.aspx (http://www.andrewchristianshop.com/Shock-Jock-Flirt-Boxer-PID14909-9240.aspx)
Personal opinion, waste of money. If you want something that unreal, just cut a piece off a nerf ball or the like. It would be the same thing, the look would be the same. Or use a roll up sock or whatever.
It looks good if you're just in unders or loose pants. I've tried other things and this just looks the best when there's a lot of give in that area.