Known in the medical world as Vesling's Line, it is the raphe (ridge) that results from the closure and fusing of the scrotum toward the midline during a particular phase of fetal development. Duardo is the non-medical term for this.
After accidentally doing the splits, I split my ball sack, right along my duardo. Took three operations to get it back to normal.
by david_johnson February 26, 2010