And that was before butts were cool.
Your buttocks are composed of three muscle groups -- gluteus maximus, gluteus medius and gluteus minimus that are collectively called the glutes. In humans they also have a role in propelling the body in a forward motion and aiding bowel movement. Resources 3 Fitness Magazine: For example, terminating an employee may be described as "firing his ass". A wider pelvis results in a wider rear end. Females may have hair growth in the gluteal cleft including around the anussometimes extending laterally onto the lower aspect of the cheeks. Rash in adults: