I guess they had to dry him out for his speech, the other day.
He had a real drinking problem when he was younger. The painting he did must not have been enough to keep him on the wagon. So yeah, Barbara must have hid the key to the likker cabinet after he got the call from the DNC.
In the gif, his wife looks mortified and Obama whispers something snarky to his beard. Of course, the MSM forgives “moderates” after a day or two of careful back page stories. So maybe he was paying markers.