
ThinkGeek makes this appropriately geeky doormat for the modern geek home. In case you're not LAN-savvy, the IP address 127.0.0.1 is the default location of the localhost – your own machine. It's a loopback device used to test a machine's TCP/IP stack. Or to trick the newbies by telling them it's their new IP address.
ThinkGeek also makes a T-shirt with this slogan on it, but we have enough T-shirts right now. We need more doormats.