What Girls Said 2
thats called squirting.
What Guys Said 3
A full bladder, being swollen, goes to push onto some point inside you, down there, that make you to feel pleasure. It is scientific!
The pee won't hurt you, as it is essentially sterile. Besides stimulating the G-spot, put a towel beneath you between her p**** and your face, and encourage the girl to pee while aroused if she feels she wants to, even in your face. Overcoming the lifelong tendency to hold back her pee is part of what leads to the G-spot orgasm.
there are a lot of us that would be happy if you DID pee...