Definitions by 250f

Urban Motocross 

Go out in the night, take your high-performance dirt bike, but street tires on it, now your city is the course.

Dude thoses Urban Motocrosser's are insane, did you see him jump that fountain?

Holy crap, he just cleared that 21 stair.

Curb to Curb

Urban Motocross by 250f September 28, 2003