Bursting in a Bikini seemed reasonably genuine at the end, when you could see the result of her bladder fighting back...then losing
one of my favourites for that primary reason...Lily in
The Gynaecologist had similar. If you follow Jayne's movies on her site, one of her "game" videos (
Simon Says, I believe) seemed pretty genuine too. She also had some earlier videos where she timed herself with her microwave and tried to hold on until she lost it - I'd put money down on those being genuine. I have a suspicion also that Rachael's
Ripping Off Her Clothes (a simply excellent video by the way, I hope more of the same come along in the future) had a real ending.
I realise these are not ones where they actually do want to make it to the bathroom and the wetting is truly a complete accident, but these still seem cases where there is no element of "letting go" (except perhaps in defeat when it's too late anyway
), thus they really did lose control.