Sys Admin t-shirts | traceroute localhost womens t-shirt
traceroute to localhost (127.0.0.1), 30 hops max, 60 byte packets
1 localhost.localdomain (127.0.0.1) 0.027 ms 0.007 ms 0.006 ms
^ Look, that's you. Or at least, it is your localhost. And a traceroute (or 'tracert') to it.
It is important to help people identify you as localhost or just to remind yourself of the almight 127.0.0.1. Get this t-shirt and it will duly inform people of your status as part of the almighty loopback interface.