Around the time Da Drought 3 was recorded, Wayne was arrested for attempted criminal possession of a weapon. What this line means is that he has a 9mm gun (a nine) that is so well hidden that cops are oblivious to it. You’re not going to stop him from carrying guns.

Nelly released two albums simultaneously just before Encore, housing the single “Flap Your Wings”:

From the girls wit skinny waists to girls heavy set
C'mon flap your wings, c'mon flap your wings

Eli Porter was an amateur rapper that went on a public access show and performed probably the worst rap ever, the resulting performance going viral on the Internet. He is mentally handicapped, but still wanted to pursue his dream of rapping. At one point famously exclaims, “I’m the best, mane… I diiid it!” Mr. Porter is referencing the video and this young soul:

(Also, they both share the last name Porter)

Daniel Tosh also had Eli Porter on his Comedy Central show, Tosh.O in which he featured Eli in one of his weekly episode ‘Web Redemptions’ in which he sets up an opportunity for Eli to rap again on a college campus. He was able to perform on stage again, with a feature from Skylar Grey and he actually did a very good job this time around.

https://www.youtube.com/watch?v=uC0U9xkbM24

Pretty inspiring honestly.

Ruth’s Chris is a chain of steakhouses. The prices are pretty steep there, as it’s an upscale establishment (“the steaks is high”). Likewise, the stakes are high in the streets of Detroit (meaning that there are great risks to be taken there).

This is also a reference to De La Soul’s 1996 album and single “Stakes Is High.”

For rappers pretending they’re sick like kids who “play sick” to avoid going to school, then Mr. Porter and his crew will show you what being sick and getting ill on the mic is really all about.

This line also references a Jay-Z line from “Ain’t No Nigga”:

Weapons concealed, what the fuck y'all feel
When you niggas play sick, we can all get ill

In the mid-1990s, before Em got famous, he and Royce performed together under the moniker “Bad Meets Evil”; “Renegades” was born out of this project. Now they are back since Slaughterhouse was signed by Shady.

Also notice the relation between “dysfunctional pair” in this line and “panties that can’t function” from the previous line. (Panties is used in the plural – a single unit is a “pair of panties,” hence the dysfunctional pair.)