Durban poison, thirty days in the hole lyric

Roll my tape
Ooh, ooh, ooh

Thirty days,
Anyone doin' that one?
I'm doin' that one

30 days in the hole
30 days in the hole
30 days in the hole

All right all right all right all right, yeah

Chicago Green, talkin' 'bout Black Lebanese
A dirty room and a silver coke spoon
Give me my release, come on
Black Nepalese, it's got you weak in your knees
Sneeze some dust that you got buzzed on
You know it's hard to believe

30 days in the hole
30 days in the hole
30 days in the hole
That's what they give you
30 days in the hole
I know

Newcastle Brown, I'm tellin' you, it can sure smack you down
Take a greasy whore and a rollin' dance floor
It's got your head spinnin' round
If you live on the road, well there's a new highway code
You take the urban noise with some durban poison
It's gonna lessen your load

30 days in the hole
That's what they give you now
30 days in the hole
Oh, yeah
30 days in the hole
All right, all right
30 days in the hole

What you doin' boy?
You here for 30 days
Get, get, get your long hair cut
And cut out your ways

Black Nepalese, it got you weak in your knees
Gonna sneeze some dust that you got busted on
You know it's so hard to please
Newcastle Brown can sure smack you down
You take a greasy whore and a rollin' dance floor
You know you're jailhouse-bound

30 days in the hole
30 days in the hole
30 days in the hole
Oh, yeah
30 days in the hole
30 days, 30 days in the hole
30 days in the hole
30 days in the hole
30 days in the hole
30 days in the hole
30 days in the hole
30 days in the hole
30 days in the hole
30 days in the hole

Read up on this strain and the interwebs says it was not discovered or crossbred till the late 70s.

That song came out in  72.

Rather askew. 

Could the lyric actually be ,  " dirt and poison"