That's one weird prolapse. You might want it checked by a professional.

I thought it to be one of those double-headed dildoes

I read that clitoris develops from the same tissue as penis, but this is ridiculous.

https://www.glamour.com/story/clitoris-facts

consciousdonkey said:
I read that clitoris develops from the same tissue as penis, but this is ridiculous.

https://www.glamour.com/story/clitoris-facts

It's actually not that ridiculous. Theoretical realistic hermaphrodites (of an anthro horse, at least) would look pretty much exactly like this, except for that if she had a ballsack, it would develop as her outer labia.