"The Doof Raps On Rap" is a song sung by Dr. Doofenshmirtz (aka Dr. O.G.) in the Doofenshmirtz's Daily Dirt episode "THE DOOF RAPS ON RAP (SO META)", explaining his feelings about rap music. It uses the instrumental from "Spa Day".
Dr. Doofenshmirtz: When I first heard rap, it was kinda confusin'
'Cause it's just a lot of talkin'; I mean, where is the music?
Can a doctor get a melody or maybe a chorus?
Today's rap artists, well, they kind of ignore
A certain older demographic; yeah, I'm out of the loop.
They're out at a rave and I'm home sippin' soup!
I know, it's hot, it's off the hook, it's all the rage;
But I guess I didn't like it 'cause I'm kinda middle aged.
But now I've got a daughter who is sixteen years old.
She plays it all the time and I guess I got sold
On the complicated rhyme schemes, the rhythm, and the bass;
Now all the time I'm spittin' rhymes out of my face!
The MC of evil science here, you better believe it!
When it comes to rap music, I can... take it or leave it.
"Open Quantum Style"
"What Does the Fox Say?"