In its most literal form, any member of the wrench family featuring a screw-adjustable aperture, allowing one wrench to fit any sized nut or bolt. While not the ideal tool for the job, the mexican speed wrench is the fastest.
Is that bolt there a 15mm or 16mm? Ah, fuck it. Hand me the mexican speed wrench.
Noun: A section of a large city, usually centered around Martin Luther King Dr. or the local nig-college, inhabited largely by moon crickets. White folk must not be outside of their cars while in Brown Town.
Anyone know where the auto parts store is? Oh, it's in Brown Town... Fuck That!