why after i masturbate and cum do i alway have to take a huge piss? and for that matter, why after smoking cigarettes do i have to shit???
Simple - urination is natures way of clearing the pipes. As for the cigarettes - can't say I've ever heard of that one before.
I heard of people having to shit after smoking cigs, I don't remember why but I've heard that before.
Nicotine is a stimulant, and stimulants increase peristalsis, that is, helps the bowels move. Cigarettes have nicotine, and that's why it works. Coffee works better.