@BertrandRussell
It’s deeply depressing that women do not know what their own genitals are called.
Blimey, you're a bit over dramatic!
Deeply depressing?! Get a grip FFS.
Most women DO know it's a vulva, but just prefer to use a different name.
And if they DON'T know, so what?
@lljkk
The word vulva has never crossed my lips & never will.
If someone IRL tried to correct me for saying vaj for vulva I would either ignore or scold them for being a patronising arse. Or maybe laugh at them for being a patronising arse. So many choices.
LOL at this.
And I agree too! 
As has been said by many posters, vulva is a horrible word, and it's weird to say it. Most women say fanny or foof or lady garden etc.
And how many men do you hear referring to their tackle as their penis and testicles? It's their cock and balls, or lunchbox, or package, or privates, or dick, or crown jewels, or tallywackle, or a multitude of other nicknames....
Any man referring to his 'bits' (in ANY social situation) as his penis and testicles would be laughed into the middle of next week. And any woman referring to HER bits as her 'vulva' would be laughed at, and mocked - and quite rightly so.