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The anus is the outlet of the lower portion of the colon (i.e., the rectum). It is located in the fold between the buttocks and is the opening through which fecal matter is eliminated from the body. For many men and women, the anus also is a sexual organ.


Anal sex may involve the following:

Insertion of the male sex organ (penis), fingers, or sex toys (e.g., vibrator, dildo) into the anus
Stimulation of the anus using the mouth (called analingus), fingers, or sex toys
Using an enem...Read the full article