There seems to be so much fake stuff out there, but these look genuine:
I suppose people can find anything erotic, and anything can be a fetish. Feet, cheese, tools…
There are people I know who are only into twins, lesbian twins at that.
I have been shown some clips of people who are supposedly twins, and I take them at face value. Ones like this:
It’s very jerky, but that is how it is. There are some other clips of the same two girls, I suppose, at a younger age. You can find them yourself: Sasha and Pasha (they are Russian). It’s called Twincest, apparently.
Sometimes the twins pleasure each other, sometimes they have other friends. I am sure I saw once a clip of two pairs of twins having a good time.
It’s incest, I suppose. I may also be slightly sceptical about it all. I suppose it can’t be too hard to find girls of a similar age who look vaguely alike…