noun. Similar to penguin-napping, in some ways.
Real citation: "After generations of varying degrees of being marginally Jewish, and pretending to be Episcopal or Methodist, my great grandmother married an Irish Catholic and was disowned. Then he got ex-communicated for nun-napping. So he converted to Judaism, and they became fairly observant, joining a Chassidic group for awhile, before raising their children Reform."
(Dec. 7, 2004, Family Origins, http://fff.fathom.org/forums/showthread.php?t=18159)
Made-up citation: "You can divide humanity into two categories: nun-napping and non-nun-napping. That's what I've believed all my life, and it's still true today."