When s/o masturbates while peeing.
It could be
done to please someone's eyes, or for the sole purpose that the feeling is awesome. It is simplier to do for
women, and they usually find it awesome if not too disgusted to
try.
Once I caught my
girlfriend pissurbating in my bathroom and I almost jizzed my pants.
Once a girl told me: "I like to
masturbate when I'
m home alone, but, if I have a full bladder, I'd rather pissurbate, it's much more fun!"