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Sexual intercourse, or coitus or copulation, is principally the insertion and thrusting of the penis, usually when erect, into the vagina for sexual pleasure
Define coitus: physical union of male and female genitalia accompanied by rhythmic movements : sexual intercourse compare… — coitus in a sentence
Rear entry sexual positions described and explained, with high quality sex positions pictures.
A condom is a barrier method commonly used during coitus to reduce the chances of pregnancy and the spread of STDs and AIDS.
Post-Coitus. Lubricated vaginal walls. Pool of seminal fluid below and covering os. Cervix deeper in the vagina than pre-arousal. Photo taken approximately 7 minutes
Coitus definition, sexual intercourse, especially between a man and a woman. See more.
Illustrated sex positions including missionary, rear entry, woman on top, and many more.