Well, I've fisted two over the years; both girls were pain sluts, advertising BDSM on their profiles.
One retired. The current one I was fisting recently when she muttered 'ow, that hurts', or words to that effect. I said 'sorry', to which she retorted 'no, it's good'.
Once I was fully in, I placed a wand on her clit and, just as she emitted a scream (in a good way), the fucking doorbell went! She was worried it might've been her mum, but it turned out to be friendly postman fucking Pat.
Another promising orgasm ruined. Still, I came, so that's ok then.
