You could spot the rapper doing normal things like jogging or walking, just like every other Average Joe. This is expanding on the idea and main basis of the song that he is just a normal man with some not-so-normal problems.
Em is a modern day master of the unstable psychotic rap persona, and this opening verse is exhibit A. He starts by painting a picture of fairly stable ordinary activity, his calm breathing underlining his efforts to stay, well, normal.

Then, in the next line it quickly disintegrates into full blown insanity and wild surrealism. Eminem enjoys letting us watch his mind unravel. Note the repetition of ‘you might see me’, which almost acts as an anchoring motif… but as we know, Em can’t stay grounded for very long. See here for another example of disintegration into insanity in an opening verse.

This is a good example of lyrics that demand ‘negative capability’ from the listener.

Negative capability = an idea espoused by John Keats whereby one holds various ideas/ concepts in one’s mind at the same time, without feeling a need to make ‘sense’ out of them. Many poets throw images and ideas at their audience that do not necessarily make any kind of logical sense, but create a general tone or mood.

Here, Em is doing exactly that. Best advice is to go with the flow and see what his next lyrical feat will be.

When Tinie clicks his fingers (see previous line) he gets women flocking to him and surrounding him like Colonel Gadaffi’s notorious all-female personal army.

‘Laffy Taffy’ refers to a 2006 song by Atlanta-based group D4L. The song came with a dance that involved clicking the fingers.

http://www.youtube.com/watch?v=3NXBgSCSrIk

Tinie breaks down his lifestyle to S’s (Mercedes S class automobiles), clubs (parties) and 7’s. Put them together and you get… S Club 7!

S Club 7 were a slightly intense mixed gender pop act from the 90s featuring one black guy called Bradley.

J-Live announces himself with confidence, stating that the beat has been produced by DJ Premier (a respected producer of classic beats).

More anaphora. Dizzee throws us into a dizzying (excuse the pun) whirlwind of girls. Some from school, some from college (6th form in the UK), some who offer oral sex (brains, also called knowledge).

To call them all that girl creates almost a frenzy of familiarity.

A neat continuation of theme from the previous line. Royalty (kings) have a ‘divine right’ to the throne. Dizzee, with his ghetto roots, is stating that he has not had this privilege, but has worked for his success in his past. Hence ‘hindsight’. He keeps the sight imagery flowing by saying that he ‘sees’ it all. Nice.

This line serves as the hook in the song ‘Money Money’ from Dizzee’s following album, ‘Tongue 'n Cheek’.