Upstate he take showers
Baby moms on Greyhound for 8 hours
See her man face-to-face through the glass
On the phone. 10 years he got, chasin' that cash

from Cam'ron (Ft. Jaheim & Juelz Santana) – Lord You Know Lyrics on Rap Genius

Meaning

In New York rap, “upstate” refers to prison, since all state prisons are upstate. He introduces the anonymous prisoner by mentioning the prison showers so that we are immediately sympathetic

More sympathetic imagery follows: the mother of his children taking an 8-hour bus ride to visit him (perhaps a subtle invocation of the trope of using women to transport drugs by bus), then having to speak with him over the phone through a glass partition

We find out that for chasing cash (no one is innocent) he is serving 10 years. Long story short: prison is miserable

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