A fork of Rural Dictionary
When wrapping a dollar around a penis to measure girth, a dollar dick is so thick that the ends of the dollar do not touch.
Allison: "Yo, do you know Victor?" Erin: "Yeah, the guy you got with last night?" Allison: "You know he has a dollar dick?" Erin: "Must have been girthy" Allison: "Yup, it was great. Less painful than I thought"