BUTT CHIN

I have lived for 26 years without giving to much thought into the shape of my chin until yesterday. Tuesday, April 6th 2010 the day that one of my 7th grade students made the comment, "you have a butt chin!"

My initial reaction was confusion, was that compliment or an insult?

So i have done some research:

A butt chin is most commonly referred to as a Cleft chin, this is what Wikipedia says:

The terms cleft chin,[1] chin cleft[2], dimple chin,[3] a chin dimple[1], or a butt chin[1] indicate to a dimple on the chin. It is a Y-shaped fissure on the chin with an underlying bony peculiarity.[4] The chin fissure follows the fissure in the lower jaw bone resulted from the incomplete fusion of the left and right halves of the jaw during the embryonal and fetal development.[1]
This is an inherited trait in humans, where the dominant gene causes the cleft chin while the recessive genotype presents without a cleft. However, it is also a classic example for variable penetrance[5] with environmental factors or a modifier gene possibly affecting the phenotypical expression of the actual genotype.

This still didn't really answer any questions for me, i was looking for something along the lines of, a butt chin indicates high intelligence...dang!

Oh well, i guess having a butt chin is better then having a butt face...