Sexual intercourse, or coitus or copulation, is principally the insertion and thrusting of the penis, usually when erect, into the vagina for sexual pleasure, reproduction, or both. This is also known as vaginal intercourse or vaginal sex.Other forms of penetrative sexual intercourse include anal sex (penetration of the anus by the penis), oral sex (penetration of the mouth by the penis or oral penetration of the female genitalia), fingering (sexual penetration by the fingers), and penetration by use of a dildo (especially a strap-on dildo).These activities involve physical intimacy between two or more individuals and are usually used among humans solely for physical or emotional pleasure and commonly contribute to human bonding.
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Sexual intercourse may be defined by different words, including coitus, copulation, coition, or intercourse (which is typically shorthand for sexual intercourse). The term coitus is derived from the Latin word coitio or coire, meaning “a coming together or joining together” or “to go together”, and it describes a variety of sexual activities under ancient Latin names, but usually refers exclusively to penile–vaginal penetration. This is often termed vaginal intercourse or vaginal sex.The term vaginal sex, and less often vaginal intercourse, may also refer to any vaginal sexual activity, particularly if penetrative, including sexual activity between lesbian couples. Copulation, by contrast, more often refers to the mating process, especially for non-human animals; it can denote any sexual activity between opposite-sex or same-sex pairings,but is generally defined as the sexually reproductive act of transferring sperm from a male to a female or sexual procreation between a man and a woman………………..READ MORE….