I've long had a tradition of putting easter eggs in code I've written. Often times its in the comments, the names of variables or functions or in the error outputs. I'm not very PC and neither is my coding style.
Most recently, I wrote a script that helps set up "advanced routing" on Linux systems. By default, the rules it creates are all taggesd "34". I'm pretty sure that anyone that audits the systems I added the iproute2 rules to won't get the significance of using 34 for the rule numbers.