A derogatory term for when two men ride on a motorcycle together referring to where the motorcyclist's posterior is relative to the passenger's penis.
Yo! Look at Chuck and Gary ridin' ass to dick on Gary's Vespa!
My Buell broke down again, so I had to ride ass to dick on Mark's Ducati.
My Buell broke down again, so I had to ride ass to dick on Mark's Ducati.
by Prilldonious May 15, 2007