It’s ridiculous and stupid, I know, but it comes from some pretty basic biology.
Depending upon size/thickness of a person’s thighs, it can be pretty impossible to put one knee over the other without squishing your dick and balls either on top of your legs or tucked underneath them. Wearing tight brief-style underwear, this can lead to situations where someone tries to cross their legs like this and inadvertently squishes their balls - a pretty uncomfortable circumstance in my own experience. Thus people with male genitalia (usually men) tend to prefer to cross their legs with the ankle over the knee to allow their genitals to ‘breathe’ and not be all squished up.
People with vaginas (usually women) in Western societies are also far more likely to wear skirts or dresses. In order to prevent someone having a peek at their underwear (or lack thereof) while wearing a skirt/dresses and sitting, these people are more likely to put one knee over the other.
Again, attempting to measure masculinity or femininity by this one preference is utterly stupid, but there are reasons why this behavioural pattern has become commonplace in Western societies. I (cis man) tend to do both in different circumstances; usually dependent upon weather, underwear and outer clothing I’m wearing.













One thing alone would help shift the Overton Window MASSIVELY in a country like the USA - mandatory voting. If everyone who had the right to vote actually voted, Republicans would never hold federal government ever again and would only be able to hold onto a couple of states and a few dozen local governments across the nation.
Without mandatory voting, Republicans can become more and more egregious in seeking to rally voters while simultaneously painting the whole establishment as broken which essentially disenfranchises the non-voting centre. With it, they’d have to seriously moderate their platforms to have any hope of forming government ever again. It would likely cause a party split that would then coalesce again into a two-party coalition on the right, starting the efforts to break down the two-party system.
If you introduce ranked choice voting as well, that’ll speed up the dismantling of the two-party system, but just mandatory voting alone would prevent Trump and his ilk from ever being in power again.