A penis, as defined in leet or 1337 speak. In the early 90s when people started using keyboards, they decided everything looks cooler if you can replace letters with numbers or add z's and r's to words. Similar words are Haxor, lulz, warez ect.

This still happens in 2012, however it has become an ethnic thing mostly because they cant spell. not because they think its funny like we did in the 90's.

When you eat dirt for the first time and leave your family to build a shack in the woods