At first I thought that the bladder sphincter had become defective by the intensity of the orgasm.
Involuntary expulsion of urine is reported in sex literature.
in particular the work of the Bartholin family in Denmark.
In the 17th century, the Dutch anatomist Regnier de Graaf wrote an influential treatise on the reproductive organs Concerning the Generative Organs of Women which is much cited in the literature on this topic.
Most of the research into the nature of the fluid focuses on determining whether it is or contains urine.
Some believe the fluid is secreted by the paraurethral ducts through and around the human female urethra, but the exact source and nature of the fluid continue to be a topic of debate among medical professionals, which is also related to doubts over the existence of the G-spot.
The suggestion that women can expel fluid from their genital area as part of sexual arousal has been described by women's health writer Rebecca Chalker as "one of the most hotly debated questions in modern sexology".
It appears that the majority of laymen believe that something is forcibly squirted (or propelled or extruded), or expelled from the woman's body in orgasm, and should so happen normally, as in the man's case.
Finally it is just as certain that such an 'ejaculation' does not take place in many women of sexually normal functions, as that it does take place in others.
The substance could be called quite aptly the female 'prostatae' or 'corpus glandulosum', 'glandulous body'...