What is it about the booty that makes it such an a

Its the normal part of the body and yet most black males like myself are so hypnotized by it when we see it. Sure it may be a part of our DNA but what is it about the booty. Sexually its always been appealing to watch a fine behind expand as it bends and stretches. The lower curves of the body also help to accentuate and make a wonderful work of art. I wish I could really put my finger on why I get all shook up seeing a nice big booty but there is no real explanation on the nature of attraction. In the great words of sir mix a lot "I like big buts and I cannot lie".