There's a point in the episode, (which I can't seem to find in the script), where Jerry is walking out of the apartment/leaving with George in softball uniforms -- and he looks at the camera to say "...?..."
It looked like an "aside" to the viewing audience, because I don't think anyone was left in the apartment when he said it.
At the time I saw it - all I remember was that what he said didn't seem to make sense/fit into the context of the plot.