Early in the week leading up to the game a member of the Kentucky Wildcats called his shot against Alabama. No, he didn't claim that his team would win (which is good since we all know there was no way that could happen).
He just said they would score.
So what do you do to express your displeasure? You take the ball that was kicked into the stands following the extra point and toss it out of the stadium.
You may have lost the game Kentucky, but you won the smack talk (all be it against yourself).