Here's an interesting one, I can always tell when my wife is horny because she hits me in the balls. She doesn't hit me hard, just enough to give me a stab of pain. It will always be around the time of her ovulation or just when she's horny. A friend of mine had a girlfriend who always tried to hit him in the balls because it turned her on so much.
Experts seem to agree that very few women have genuine fetishes, it's something that men generally have. The purpose of this posting is simply to find out what women on this forum feel about ballbusting and whether it is a common fetish for women.
By the way, having an orgasm after being hit in the balls is an amazing feeling, a combination of dull testicular pain and extreme pleasure all coming from the same place.
I don't know where you got your expert opinion that very few women have fetishes, but although it seems to me that some women's fetishes are far more ordinary than some men's - I think they still have plenty of them.
Ball busting seems to be a new thing. I am 52 and no one I know has ever been into this near my age. But it seems to be quite the thing with young women. So I can't really account for it. I don't think of it as a fetish - more something stupid and dangerous.