My main problem with Negative XP is that many of his songs just flow really poorly and either don't rhyme or the rhymes are really hamfisted. This one doesn't though:
https://www.youtube.com/watch?v=SamS-1kNXuU
Follow
BEAT BEAT BEAT, KILL KILL KILL
STOMP THEM RAW TILL THEY LOSE THEIR WILL
SHOOT FIRST, ASK QUESTIONS LATER
A GUN IS THE GREATEST NEGOTIATOR.
This rhyme is great