My gas meter in need of a pump
I got enough to get me through the traffic jam
At least I hope

from Kendrick Lamar – Sherane a.k.a. Master Splinter's Daughter Lyrics on Rap Genius

Meaning

He’s riding on E and he only hopes he can make it through the traffic. (LA is infamous for its frequent traffic jams.)

This is an example of the risks Kendrick’s young brain is willing to take for the chance at having sex; notice that the “gas meter in need of a pump” can be used as a euphemism for sex.

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