Through the side of a pump, 0 to 60 hop in and gun it

from Eminem (Ft. Liz Rodrigues) – Survival Lyrics on Rap Genius

Meaning

Em’s already mentioned he’s in a truck — so it would make sense that he’s talking about the time it takes him to get accelerate from 0 — 60mph which is a key factor in automobiles.

I'mma light this bitch up like I’m driving a truck

Also, ‘gun it’ together makes g-unit as mentioned in the next line.

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