Thousands of Aussies just got very honest about their sex lives. What they said might surprise you.

From sex toys and masturbation to Australia's "horniest" capital, a mother-daughter duo has lifted the sheets on what Australians are really doing — and not doing — between them.

Dr Esmé Louise James and statistician Dr Susan James have conducted one of the largest sexuality surveys ever, with more than 10,000 responses from Australia and the world.

The results are anything but vanilla and will be covered in SexTistics, an irreverent documentary series funded by Screen Australia.

Watch: The mother-daughter duo tackling hard sex chats. Post continues below.

Esmé and Susan told Mamamia they uncovered interesting sex patterns across Australian states.

"It looks like Perth might actually be the horniest state. Just overall, they're going at it more frequently there than the other states," Esmé said.

Masturbation, marriage and toys.

The topic of masturbation, particularly in marriage, proved to be a lightning rod in the survey.

"This was something that was definitely very generational and there are some couples that still believe masturbating is almost like a form of betrayal of your partner," Esmé said.

"But that's definitely getting gradually more and more busted.

"For instance, we saw Gen Z are frequently engaging in active self-pleasure. In fact, in some cases, more than they're having intercourse with one another."

The survey also uncovered how often people were masturbating.

Masturbating isn't an act solely resolved for sexual pleasure. Image: Canva.

"About 50 per cent of people said, and this is whether they're in relationships or not, that they were masturbating between one and three times a week," Susan said.

"The top 84 per cent of people said they masturbate to relieve tension, whether it be sexual and then just to help them to relax, to help them to go to sleep.

"It's actually more than sexual pleasure. It's something that they do both together but also solo."

Dr Esmé Louise James and Dr Susan James. Image: Supplied.

Exploring the topic of masturbation, the mother-daughter duo discovered a gender divide in sex toy usage.

"89 per cent of our submissions use sex toys, or have used them," Esmé said.

"One thing we find, especially in relationships, is that the majority of the usage is actually women. A very small percentage of men use sex toys.

"There's still very much a big gender divide in the use of sex toys in our marriages. And clearly vibrators still come out on top."

The elephant in the bedroom.

One of the most common questions submitted to the survey was about menopause and how it impacted sex lives.

Although this may seem a positive, this trend illuminates a broader pattern; that communication, or lack thereof, is the elephant in many couples' bedrooms.

Listen to the sex chat no woman wants to have. Post continues below.

"It (wasn't) just a case of having this information there for the people going through it but also for the partners," Esmé said.

"We had a lot of very curious men submitting comments. That actually speaks to the fact a lot of men don't feel like they have access to information about how to pleasure women or how to take care of women."

Even amongst couples who'd been together for years, it seems the bedroom remains a battleground of unspoken needs.

Despite the desire for deeper intimacy, 30 per cent of respondents said they couldn't speak to their partner about sex. This includes people in both short and long-term relationships.

"It's a big percentage," Susan said.

30 per cent of respondents said they couldn't speak to their partner about sex. Image: Getty.

There was an overwhelming urge from respondents to break down the barriers of sex and conversations.

"We had 97 per cent of our respondents say that they needed, and wanted, better sex education and for it to continue on into adulthood," Esmé said.

"That is a massive statistic. That's thousands of people saying that they still want access to these kinds of conversations.

"Our relationship to sex can change throughout our life and sex education shouldn't stop when we leave school, because there's still so much to learn."

This is exactly why Esmé and Susan have decided to lift the lid on Australian bedroom habits, and, what makes them uniquely suited to do it.

Because for them, uncomfortable conversations don't exist.

"We've always had a very close relationship. We basically talk about everything," Susan said.

Feature image: Canva.