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The buttocks (singular: buttock) are rounded portions of the anatomy located on the posterior of the pelvic region of apes and humans, and many other bipeds or quadrupeds, and comprise a layer of fat superimposed on the gluteus maximus and gluteus medius muscles. Physiologically, the buttocks enable weight to be taken off the feet while sitting. Many cultures have also used them as a target for corporal punishment, and for some cultures they play a role in sexual attraction...