Communication protocol between the female anatomy that allows the sychronization of menstrual cycles when females are living in close proximity for extended periods of time.
Bob the polygamist has 5 wives who originally had different menstrual cycle dates. Upon moving into the same house, all womens cycles synced to begin on the same date. This phenomenon is accomplished via the Vaginal Time Protocol (VTP) in which all womens cycles sync to a similar date.
by thevagman@yourcervix January 20, 2011