Two small ones I keep forgetting to post. Apologies if these have been said but I didn't see them;
Tech N9ne - Niggas
"Nigga, nigga, nigga, nigga, nigga, nigga please / I treat it like a fucking disease"
NWA - Niggaz 4 Life
[Eazy-E] "Nigga, nigga, nigga, nigga, nigga, nigga please / I'm treated like a fuckin disease"
&
This one might be a stretch but on Leave Me Alone I saw "The hood don't play me, ha / treat my strange music like rabies, ha / they be sayin tech nina he crazy, ha" as a reference to HA by Juvenile.