A male member of the Church of Jesus Christ of Latter-day Saints (Mormons) who fits the stereo-type of the goody-goody Mormon (i.e. devoted to the Church standards). See also "Molly Mormon." Can be used both positively or negatively.
Jimmy is such a Peter Priesthood. He get's his home teaching done on the first of every month!
by HollyVanGogh July 28, 2005