A writer insists men are "clueless" when it comes to sex.

Nadia Bokody, from Australia, made the statement after research showed 50% of men were unable to correctly point out the vagina.

The study published in BMJ Open saw sex education as a reliable source of information, with half of them learning from porn instead.

But it's not just about the orgasms, Nadia claims it's more about the ability to connect with humanity.

Speaking to news.com.au, the sexpert said: "It's hardly news to women.

"If writing about female pleasure has taught me anything, it's that men just don't get it."

But she doesn't hate men, just the system
But she doesn't hate men, just the system

Nadia continued: "When Boys & Sex author and researcher Peggy Orenstein asked teen boys about their sexual experiences, she noted the use of vernacular like 'nailing', 'pounding' and 'hammering' – jargon she likened to '(as if they were on) a construction site, not like she engaged in an act of intimacy'."

And the sexpert saw a similar trend during her former career as a high school teacher, where lads would use terms like "I hit that" and "she took it good" when talking about girls.

She added: "By conditioning young men to view women through the lens of objectification... is (to) impair their ability to accurately interpret – or even recognise – their female partner's arousal level."

But one thing that really annoys Nadia is when she receives an email from a clueless man telling her she has it wrong.

However, the sexpert claims she's more angry at the system rather than the men themselves.

She explained: "I'm not angry at men.

"I'm angry at the system that lets them down, and in turn, denies women dignity, pleasure and body autonomy.

"The truth is, as long as we raise boys in a culture that views as vessels for the legitimisation of their masculinity, we can't expect them to grow into men who are anything other than absolutely clueless about how those women's bodies work."