Frankly speaking, I am not so sure there are two balls in female Labia majora as homologous to testes in male scrotum. Maybe they are just lumps or something, but I really can touch them. The right one is bigger than left one and its diameter is about 5 mm. They can be moved slightly, when I play with them. They may change a bit in size, when I am aroused. I think they are the key that my ejaculation is so different from other women. No research or article has mentioned them in any way, even no one trusts me.
I call them X- balls