P.S.K. what does IT mean?

P S K we're makin' that green
People always say What the hell does that mean
P for the people who can't understand
How one homeboy became a man
S for the way we scream and shout
One by one I'm knockin' you out
K for the way my DJ kuttin'
Other MC's man they ain't sayin' nothin'
Rockin' on to the brink of dawn
I think Code Money yo time is on
P S K we're makin' that green
People always say What the hell does that mean
P for the people who can't understand
How one homeboy became a man
S for the way we scream and shout
One by one I'm knockin' you out
K for the way my DJ kuttin'
Other MC's man they ain' t sayin' nothin'
Rockin' on to the brink of dawn
I think Code Money yo time is on
Drivin' in my car down the avenue
Towin' on a J sippin' on some brew
Turn around see the fly young lady
Pull to the curb and park my Mercedes
Sayin' Fly lady now you're lookin' real nice
Sweeter than honey sugar and spice
Told her my name was MC Schoolly D
All about makin' that cash money
She said 'Schoolly D I know your game
Heard about you in the hall of fame'
I said 'Mama mama I tell you no lies
'Cause all I wanna do is to get you high
And eh ay you down and do the body rock
To the wall to the corner ' got into the car
Took a little trip to a fancy bar
Copped some brew some J some coke
Tell you now brother this ain't no joke
She got me to the crib she laid me on the bed
I *** *** her from my toes to the top of my head
I finally realized the girl was a whore
Gave her ten dollars she asked me for some more
P S K we're makin' that green
People always say What the hell does that mean
P for the people who can't understand
How one homeboy became a man
S for the way we scream and shout
One by one I'm knockin' you out
K for the way my DJ kuttin'
Other MC's man they ain't sayin' nothin'
Rockin' on to the brink of dawn
I think Code Money yo time is on
Clinton Road one Saturday night
Towin' on a cheeba I was feelin' alright
Then my homie-homie called me on the phone
His name is Chief Keith but we call him Bone
Told me 'bout this party on the South side
Copped my pistols jumped into the ride
Got at the bar copped some flack
Copped some cheeba-cheeba it wasn't wack
Got to the place and who did I see
A sucker-ass ***** tryin' to sound like me
Put my pistol up against his head
I said Sucker-ass ***** I should shoot you dead
A thought ran across my educated mind
Said Man Schoolly D ain' t doin' no time
Grabbed the microphone and I started to talk
Sucker-ass ***** man he started to walk
P S K we're makin that green
People always say What the hell does that mean
P for the people who can't understand
How one homeboy became a man
S for the way we scream and shout
One by one I'm knockin' you out
K for the way my DJ kuttin'
Other MC's man they ain't sayin' nothin'
Rockin' on to the brink of dawn
I think Code Money yo time is on