mylifewithu: It seems to happen a lot when women mention removing things. My friends and I always joke that a man sleeps with his hand on his manhood out of fear of it falling off or something.
It actually has nothing to do with concern over it falling off. The custom of holding one's wood was developed during exploration of the world's ocens. During those times the crew slept in hammocks due to room restrictions. During the rest period it was not uncommon for men's arms to dangle over the sides of hammocks resulting in circulation being cut off and people falling form their hammocks. This problem was resolved by placing the free hand on the manhood. Over time, natural selection prevailed and men developed a head on their manhood which helped to prevent the hand from slipping off.
Hope this clarifies the male perspective.