The Detroit Pistons won the NBA championship in 2004.

Dre told Eminem to get everything he can while still relevant in the rap game.

Eminem is likely referring to the nursery rhyme “Hey, diddle, diddle,” about the cow that jumped over the moon and ties it into the idiom “milk this shit for what it’s worth”, a phrase that means taking advantage of something. Dr Dre told Eminem to take advantage of the Rap game while he is still relevant in the music industry. It’s safe to say Eminem took this advice, who currently has a networth of $140 Million.

It doesn’t look like Eminem is going to slow down anytime soon either, recently winning EMA’s ‘Global Icon’ Award as well as having yet another album debutting #1 on the Billboard Charts.

In the background you can hear Em flutter his lips to make the sound of a cow crashing to the ground.

Norman Bates is a fictional serial killer created by writer Robert Bloch as the central character in his novel Psycho. In the novel, Norman murdered a woman in the shower and washed the tub numerous times to get it clean. Seems like Shady is quite experienced in this field.

Em already referenced Norman Bates on “Role Model” on The Slim Shady LP:

I’m about as normal as Norman Bates with deformative traits
A premature birth that was four minutes late
Mother, are you there? I love you
I never meant to hit you over the head with that shovel

We also get another example of Eminem rhyming words with “orange” (chorus/forest/orange/wash it/normal/Norman).