Who's The Father?

A lady was in the delivery room starting to deliver her baby. As it made its appearance it was dark and had an afro. The doctor said, "Ma'am, have you ever slept with a black man?" She said, "Well, yes, but only once." "Once is all it takes" he replied. Then the torso appeared and it was yellow. "Ma'am, have you ever slept with an Asian man?" the doctor asked. "Well, yes" she said, "but only once." "Once is all it takes," he said. When the legs appeared they were red. The doctor asked her if she had ever slept with an Native American and she said, "only once," and he replied that that was all it took. Then the doctor held it upside down and slapped its bottom to make it cry. "Oh, thank God," she exclaimed "at least it doesn't bark!"