7 discs is not a standard number of slots for a car’s CD changer, but apparently this girl got a custom system so that she could fit all 7 of Eminem’s albums instead of Lil Wayne’s (they both had seven albums at that moment)
Here are Eminem’s seven albums:
- Infinite / Curtain Call compilation / The Re-Up
- The Slim Shady LP
- The Marshall Mathers LP
- The Eminem Show
- Encore
- Relapse
- Recovery
And Wayne’s:
- Tha Block is Hot
- Lights Out
- 500 Degreez
- Tha Carter
- Tha Carter II
- Tha Carter III
- Rebirth
With the standard for a disc changer being 6, the 7th slot would be the girl and mean that he made hip hop his. This is further shown with the line ending with “aww”.
But more importantly: who listens to CD’s anymore? You’d think he would say something more like “I’m 10 Gigabytes on her iPod, aww”