A rimrock road is the process of the passenger sitting on the drivers face, so he may receive a rimjob A.K.A.: the act of orally stimulating the external anal sphincter to cause sexual arousal, whilst the car is in motion.
I picked up a hitchhiker and as her fee, i asked her for a rimrock road which she respectfully accepted, my asshole has never seen cleaner days.
by Rimrock Randy March 22, 2009