If you're a Linux/UNIX person aware of the *nix device naming scheme, you'll get this humorous design's point. It says /dev/human and works great on a variety of merchandise. (Yes, we know it may not make sense to see /dev/human on a tote bag or bumper sticker, but you'd be surprised at the things people buy!)
Keywords/tags: Linux, UNIX, /dev, /dev/human, geek, Linux humor, UNIX humor, geek humor, sysadmin, system administration, Linux devices, UNIX devices