Jamphat.com/rap is a mind-bending single-page site that's built around the concept of rap lyrics "represented in mathematical charts and graphs." It first appeared in 2007 and has been passed around in some circles since then, but continues to exist as a hidden gem of the internet, a treasure-chest of weirdness that holds up through space and time. The charts are like graphical-rap-mad libs, and for those looking to waste a sizeable amount of time on a rainy Friday, figuring out the songs and reminiscing about the classic verses is a pretty good time.