No
If someone says no during sex, it means they want to stop. Very confusing, especially if just consented to having sex; but if they say no it means no.
You are having an orgasm?
The leader during sex?
By "do" I assume you mean a very disrespectful scumbag way of sexying 'have sex with' - yes, you can have sex with a women during menstruation.
It means avoiding sex during certain times of the month.
that sort of answers itself
They are probably referring to using protection (condoms, birth controls, dental dams) during sex - oral sex, anal sex, and vaginal sex.
That is a discusting question that does not deserve an answer!
That sounds like hurrying up, to get to orgasm quickly.
no, not at all
They usually get darker during sex because they get filled with blood when you get aroused. That goes back afterwards.
Not necessarily: almost all men will enjoy having their prostate glands stimulated during sex (with women or with men) if they are open to experiencing that.
nothing really, just means u like it! it happens to me :)