Basic Types of Sexual  Behavior

2. Heterosexual Intercourse

Anal Intercourse

After an ancient Greek vase painting.

Heterosexual anal intercourse is here defined as involving sexual contact between the penis and the anus of a female.
In most individuals, the anus is highly sensitive to the touch and is, in fact, one of the most important erogenous zones. It is therefore hardly surprising that many people enjoy some form of anal stimulation during their sexual activity. For example, they may insert their fingers or some cylindrical object into their anus while they masturbate, or they may like some anal manipulation during oral and genital intercourse. Some men and women also like having the anus licked or kissed, and their partners may be quite happy to oblige. (In professional language, this practice is known as anilinctus (from lat. anus: the rectal opening and linguere: to lick). However, without the most scrupulous cleanliness, this practice can, in some cases, lead to an infection with hepatitis and other sexually transmitted diseases.
Finally, it should be mentioned that some men enjoy placing their penis between a woman's buttocks and then moving it back and forth until they reach orgasm. Although in this case there is no penetration or insertion, the woman may nevertheless also experience some pleasure.