seriously, all the cookies and crap i inhale over the holiday season are murder on my body-ass index
the direct relation of the size of one's body frame in proportion to the size of one's ass (most often implying a significant–-and undesirable--disparity)
"seriously, all the cookies and crap i inhale over the holiday season are murder on my body-ass index" What is the definition of "body-ass index"?