Another synonym for private parts, be it male or female. Cooty is used primarily in an effort to be cute or subtle in the reference to the area, without being excessively dirty.
(noun) The area on a female that is between the lower part of the vagina and the anus. It's a combination of the hoochi coochi la la and the booty area. This area is known as the "taint" on a male body.
While shaving my cooty booty in the shower this morning, my legs were in such a weird position that I felt like I was stretching for an Olympic gymnastics routine.