Most toxins have an impact on sperm quality. Getting drunk often results in less of a percentage of quality sperm (i.e. swimmers) because it blocks your body from absorbing zinc and vitamin C, which help sperm development. Nicotine also impacts sperm quality.
From what I understand, sperm...
Wow, interesting.
I have been with a woman who could absolutely gush without much, if any, G-Spot stimulation. Just took a couple of fingers or a cock in her pussy and some clitoral stimulation and the flood gates would open.
However, I have never known anyone who can do it on command...