i don't think it's taboo unless maybe you're giving them suggestions about sex positions & stuff. i had to take a class on child & family development, & our teacher was saying how when a child asks you questions you should be honest w/ them, but also keep it age appropriate. if they ask where babies come from, tell them, but don't be too graphic & consider how old they are. my parents never really talked to me about sex, but they did sit my sister & me down (we're a yr apart) & explain periods & stuff to us (using text book diagrams & stuff that they got off the internet). they did that right before i went to middle school. & right before i went to hs, they sat me down & told me how i should never let a guy touch me inappropriately, & if he did, to slap the hell out of him, yell, "DON'T YOU EVER TOUCH ME LIKE THAT AGAIN!" very loudly, then go tell a teacher or administrator. they told my sister the same the next yr. if we ever had questions, they were glad to answer them, but they never really asked my sister & i about our "sex" lives till we were in college. my sister & i never went on a lot of dates in hs, so it was never really something that they worried about. now they tell us that we're old enough to make our own decisions when it comes to being intimate, & to just be smart & think about what we're about to do. & of course to be safe. my sister started having sex a few months ago & went to my parents & asked if she could go on birth control. while they wished that we wouldn't have sex till we're married, they let her do it b/c they'd rather she be safe than get pregnant.