“99 Problems” is a song by Jay-Z in which he explains the following in the hook:

If you’re having girl problems I feel bad for you, son
I’ve got 99 problems but a bitch ain’t one

Sadly, all of Royce’s 99 problems are bitches, and he has them because of the money he recently got: the bitches go after the money, and when they have it, they’ll leave Royce.

Royce is wearing some classic Air Jordan 2 and Air Jordan 3 Nike sneakers while all the other people have to wear some basic not-so-great shoes by ASICS.

Two pairs of shoes, the 2’s and 3’s, of course sum up to 4 shoes (J’s = Jordans).

“On my J shit” also plays into the next few lines, which are referencing Jay-Z.

People often act “fake”; they try to come off as something that they aren’t, often this is “thug”, “ghetto” or w/e you want to call it. When these people are coming to Jon Connor’s hometown, Flint, MI, they shouldn’t act “thug” if they aren’t. Because there actually live people in Flint who are “thug” and acting “thug” will only get you killed.

Del’ll out-rap anybody, other MC’s don’t stand a chance against them, it’d be like the other rappers are useless and nowhere to be find after Del’s done with them.

All of Del’s raps are figuratively built in 3D, they’re extremely well made and there’s a whole word to explore behind them.

This line is suggesting that people who are famous or influential, such as celebrities, etc, “prey on human ignorance” through their words and actions. They do this by doing or bragging about things that are wrong or immoral (casual sex, drugs, having/using weapons, crime, etc.) and in doing so, are making these things seem cool or popular to the multitude of people who idolize them.

I once got mad word that “O” stands for ovaries, you heard it here first nomsayn.

Chubby Checker is the artist who ended up making “The Twist” a hit and thereby spawned the Twist dance. Del plays on either the song or dance with implying that he’ll out-rap anyone.

Spectres or specters are apparitions, meaning that they’re things (both living and inanimate) people claim to see while there really isn’t anything to actually see, the best-known example of this is a ghost.

In mathematics everything that is correct is just plain and simply correct. Everything can be proven right or wrong and there’s is nothing in between those two. Meaning that everything Del spits is factual.