To give someone money for gas. Also can be used when lending youre friend money to have sex with a prostitute.
CKASH: Shit all yall niggaz slangin that shit in da hood and aint none of yall got snaps on the petro.
by young jeezy July 13, 2005
Money for gasoline
A-Wax: "who got some snaps on the petro? Slangin all that shit in the hood and yall aint got no mutherfuckin money."
by FlyAway July 20, 2011
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