hi
i had this issue a while back and then i found a very good video on the net showing how to do it.
now i wont post a link but i will tell you how its done.
when you feel your orgasm approaching its normal to tense up right?
dont!
instead of tensing start pushing as if you are trying to pee. i promise you this works.
also the best way to squirt is through g-spot stimualtion. so a lot of people think that a straight forward in and out motion will do the tirck but it doesnt. the best motion is a come hither motion.
start gently and then increase pressure. the g-spot will start to change in the way it feels, it goes from hard to soft and spongey. thats when you start to feel the urge to pee. go with it.
i recommend putting some towels down though as it can get very very wet.
my first time took a good hour of g-spot stim befor ei started to feel anything.
also its better if you are in a slightly raised up postion. as well as that push down on your tummy, just above you pubic bone. this pushes the gspot down on to the fingers/toy/penis whatever you are using.
if you still have difficulty please feel free to contact me
also if you want a link to the video that explains it better than i can dont hesitate to get in touch.
it is an amazing feeling when it happens, just make sure your other half knows what to expect lol!!!