Sexual Intercourse
is sex between a man and a woman, it is also known as
heterosexual sex. Primarily it is the insertion of the penis into the vagina, also known as vaginal intercourse. Sexual Intercourse is often shortened to simply sex or intercourse.
Men and women have Sexual Intercourse for sexual pleasure, love, and/or reproduction. Only Sexual Intercourse between a male and a female can lead to
sexual reproduction. Thus, Sexual Intercourse is essential to the continued survival of humans, and the vast majority of animal species.