Do men urinate inside the female vagina while having their orgasm?

Hi i dont have a huge answer for your question but i do know that when a woman has an orgasm she ejaculates too and for a woman this is like  a urine type liquid. Whereas the liquid from just an orgasm alone from both a man and a woman is a thicker substance. It may be that when u lead the sex between you and your partner you have a stronger orgasm and this may also lead to you ejaculting at the same time. Hope this has helped.

You may try to find out by making sure that both of you empty your bladders immediately before engaging in intercourse. This will rule out any accidents due to incompentent bladder sphincters during intercourse.

Google "squirters" - some women ejaculate a larger volume of fluid than others.

I have had this problem with my husband and I, so i can tell you that yes it happans. We went to the doctor and he said that most men dont do it however with some men if they have ever had a accident as a child or blunt testicle damage it can happen. What happens is there is a flapper in there that usually closes during ejaculaton but with some men it doesnt work all the way. With my husband and I it came to the point we arent allowed to be intamant with me on top due to the uriane will go back into his bladder and cause infection. So if you fill that this is whats going on he needs to be checked. Its not something that will go away or stop, but if not checked it can go from the bladder and over time to the kiddneys... Hope this helps !