These are the ``just another perl hacker'' signatures that some people sign their postings with. About 100 of the of the earlier ones are available from the various FTP sites.
When people started running out of tricky and interesting JAPHs, some of them turned to writing ``Will hack perl for ...'' quotes. While sometimes humourous, they just didn't have the flair of the JAPHs and have since almost completely vanished.
Other resources at this site: