I asked this question on a social networking forum and got a variety of responses including this one:
And this one:
"Vulva is just a gross word." (Vulva is not a gross word. "MOIST" is a gross word.)
And also this one: "It all means the same thing."
Do you need another diagram? Okay, here:
So if you choose to shave your vulva, that's cool. Get creative. Have fun with it. However, if you choose to shave your vagina, it's not going to end well. Don't use the good towels.
Now, I know there will be someone who will get all worked up about this. Calm down. You can teach your kids whatever you want. Don't sweat it because some stranger on the internet told you that it's the wrong word. You're not breaking any law of child rearing. No member of the Vulva Brigade will show up and ticket you for referring to your lady bits as your bajingo and hand you some reading material about the inaccurately named Vagina Monologues. I'm not going to take away your euphemisms. Hell, euphemisms are fun! Tell them it's a Harvey Wallbanger or a FlufferNutter if you like.
I'm just saying that technically, it's incorrect.
The vulva is the correct term for the outside parts as a collective whole.