alot of sick lines mentioned, some that y'all missed are:

.....tell you to suck my dick while i'm pissin/
i dun even listen to your shit to know who the fuck i'm dissin
Dr. Dre to Ja Rule

Mobb Deep wonder why a nigga blowed them out
nexx time grown folks talkin bitch close ya mouth
2Pac to Mobb Deep

this is a nigga tryin to make a livin off of dissin/
somebody that he gotta know is better than him/
but he feelin himself cause he got more chedda than him/
well lemme tell you somethin, you might got more cash than me/
but you aint got the skills to eat a niggas ass like me
Canibus to LL

mini me with a bunch of little mini yous/
runnin around ya backyard swimmin pools/
over 80 million records sold/
and i didn't have to do it with 10 or 11 year olds/
Dr. Dre to Jurmaine Dupri

Fuck there are so many, but this is all i can think right now