Sex positions like this demand the highest degree of muscular control and co-ordination on the woman's part, and a considerable amount of practice.
These positions involve a penis going into a vagina or anus.
Fellatio is a kind of oral sex that involves a man letting his penis be licked or "eaten" by his partner.
This is a technique where the man is treated to the sight of her buttocks framing his erection as he watches himself penetrating her.
These exciting techniques can be just as powerful for the man because different positions stimulate different parts of his penis and also put different degrees of pressure on it.
Quite often couple experiment with different positions but do not get the desired result.
It may also be performed for its own sake.
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