monkey stalking him

This lyric by King Von, is a metaphor and a play on “monkey on my back”. When you have a monkey on your back, you have a desire to drink smoke gamble (or any unhealthy coping method) because of emotional distress. King Von is saying the monkey on his uncles back, or his drug dependency, is stalking, in other words prominent or wont let up.

“My uncle got that cough again, he been smoking cr@ck since I was born. That monkey STALKING him.”
- King Von