Explain this line

[SliK]

I think he intended it to be a double entendre. Playing on the phrase "turn it up right now"

I.e "turn it upright, now" and "turn it up, right now".

[SliK]

Rap genius is so stupid, half the time it is written by retards. That ^ should go without saying. The real genius of the line is the double entendre.

[eminembound]

I think that 'turn up' has two meanings. One for 'turning up the volume' ('you hear this finger?'). And one for like, turning up his middle finger, which is upside down.

Always took it as this, thought everyone did too lol

[EminemBase]

It's just a play on words to catch you off-guard...

It was mainly to get to the 'turn this motherfucker up right now' which is obviously a play on... as already said - like, turning volume up, and also to turn the finger up the right way...

But also just like a play on mixing up hearing with seeing... that's what that whole line is.