It is most likely due to the amount of pressure when a woman urinates. The more force the more sound that it produces. If you will notice, you probably don't hear that sound when you don't have to urinate that bad, and you will probably hear it when you have really needed to go to the restroom.
When the urine hits the lips on the way out it makes such sound. Take your fingers and restrict the water coming out of a hose. You will hear the same sound.
Pretty sure it's caused by the foreskin or the shape of the urethra.
They make like a hissing sound, sometimes a chirping one too.
A ferret that make a hissing sound means they are annoyed or irritated
To make a humming or hissing sound, like an arrow or ball flying through the air; to fly or move swiftly with a sharp hissing or whistling sound., A hissing and humming sound.
Geese make a hissing sound.
it makes hissing vocalizations
Sometimes it makes an echo or reverberation.
Snakes are reputed to make a hissing sound.
1. to make a humming, buzzing, or hissing sound, as an an object passing swiftly through the air 2. to move or rush with such a sound 3. a person who is quite good at a particular activity, in a certain field, etc. 4. in slang terms, to urinate
Could be a "hissing" sound
they make a hissing sound
A hissing noise