help, song IDing

[Tanjential]

on NWA's fuck tha police 2, before eazy's verse, the dudes in the skit are bumpin' some shit and one of the dudes is like 'yeah that shit's hittin man...' anyone know what they are bumping?


also, on the wballz mixtape, the intro to both discs has someone bumping a nate dogg song, that I think snoop raps on (this mixtape came out in 2003) and the chorus is like "i'm gonna roll/ i'm gone stay fly...." or something like that. what is the name of this song?

thanks-T