"When I was old enough to take baths in the bathtub, and to know I had a penis and a scrotum and everything, I asked her not to sit in the room with me. "Why not?" "Privacy." "Privacy from what? From me?" I didn't want to hurt her feelings, because not hurting her feelings is another of my raisons d'etre. "Just privacy," I said...She agreed to wait outside, but only if I held a ball of yarn, which went under the bathroom door and was connected to the scarf she was knitting. Every few seconds she would give it a tug, and I had to tug back--undoing what she had just done--so that she could know I was OK."