There is a notion among the Rabbis that Adam was possessed originally of a bisexual organization, and this conclusion they draw from Gen. i. 27, where it is said, "God created man in his own image; male-female created He them." These two natures, it was thought, lay side by side; according to some, the male on the right and the female on the left; according to others, back to back; while there were those who maintained that Adam was created with a tail, and that it was from this appendage Eve was fashioned.
Other Jewish traditions tell us that Eve was made from "the thirteenth rib of the right side" (Targ. Jonath.), and that "she was not drawn out by the head, lest she should be vain; nor by the eyes, lest she should be wanton; nor from the mouth, lest she should be given to garrulity; nor by the ears, lest she should be an eavesdropper;