I'mma treat you like my whip
Hop in and let me test drive
Throw it in reverse
Then put it into sex drive

from Kirko Bangz (Ft. Big Sean, Bun B & Wale) – What Yo Name Is (Remix) Lyrics on Rap Genius

Sean is reffering his to his girl as a car,
Hop in & let me test drive = Get in her pants
Throw it in reverse = Make her back it up
Then put it into sex drive = Turning her on so bad she wants to have sex with him now

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