Couple of my favorites
Thee big pun one from deep cover 98:
“Dead in the middle of Little Italy little did we know
That we riddled some middlemen who didn't do diddly”

Cam’ron on Oh Boy: Killa and Capo, we chill in Morocco for reala
We got dough, chinchilla dough and fill with them hollows

MF DOOM on That’s That: Papa was a Rolling Stone star like Obama, pull a card like oh drama
Civil liberties
These little titties abilities riddle me, middle C

Obviously I chose these based on worldplay, flow and rhyme density, not necessarily lyrical content

that whole doom song is f***ing crazy