My son has figured out how to pull his "man parts" out of his fly on his underwear. My daughter is equally impressed and duly proud of his accomplishment. My father, who was in town this weekend, came by to see the kids. Apparently, when they were upstairs my daughter explained to my dad that her brother can pull his penis out of his fly. She continued by saying, "But my daddy can't pull his out of his underwear."
I guess the fact that my husband keeps his privates private is a good thing or else we'd have my daughter running around telling everyone that he pulls his penis out of his underwear.