"Is That Yo Bitch?" which was all about him f'n Carmen. Nas didn't particularly get made at Jay-z for f'n his girl when "The Takeover" and "Supa Ugly" came out. I mean he was already diss'n her on Stillmatic ("U Da Man" & "One Mic"), which I'm pretty sure he wrote before the Summer Jam thing b/c he was still just going subliminal at Jay-z on those tracks. He I'm sure like a lot of ppl (Including Jay's mom) thought it was low when he went there in such detail (Talking about putting condoms on the baby seat is pretty far imo)