If nothing else, the Duke-UNC game has given us a GIF that should have long-term use. Boston Celtics head coach Doc Rivers is in the middle of the massive swarm of people at Cameron Indoor, taking in what may be his son's last game. Remember, it was Doc jumping around in the crowd after Austin Rivers drained the game-winning three at the Dean Dome, so he might as well cap the regular season by taking in the encore matchup.

After Rivers was called for a charge -- perhaps questionably -- late in the first half, the camera panned to Doc. And boy was Doc unhappy.

First, the charge:

And Doc's reaction:

Doc's reaction is pretty good, but look at the guy over his right shoulder. What is he chewing on? Why is he gnawing so fast? Why is everyone around Doc chewing gum?