hi Bao B, May i know how old is your child?
at a certain age, a child will started to feel curious about human's body. i guess its best for you to explain/show it to him.. explain to him about the gender differences and stuff in a simpler way and use the actual word to describe the body part instead of giving "nicknames' to it =)
i think their needs complement one another lor.. just like sometimes we see an old man with young woman together.. the man needs her youth whereas she needs her financial stability...so its a win win situation . Just my 2 cents ..
sometimes, is very hard to judge someone whether they are really money minded or not provided both party are willing..=)