Lyrics can be lot of different things. The Freestylers - 'Painkiller' always gets me in a party mood. But sickness is in the eye of the beholder, one cannot define "The sickest lyrics". Usually the "sickness" is defined by the genre. Like rock might favor a huge guitar solo, whereas rastas may prefer smoking tunes and "slowness" compared to the rock. Be the one that catch the worm we nicks trieze twenties and dimes got my spot looking like a soul train.