To offset at least some of any bitter taste left by my previous post, here's Julia Sweeney's hilarious description of how she fielded her eight-year-old adopted daughter's questions about the birds, the bees and the flowers (and a frog). It's probably not safe for work, but not in a pornographic or distasteful way - it's just a sensitive subject. She handles it very well, in my opinion.
I wonder how long it was before Mulan came back with more questions - and whether Ms. Sweeney's response next time was "Ask your father!"?