I dare say Mrs. Sakkaro knows what Mr. Sakkaro does and is all upset because she doesn't know what I do.
You stay home and write. What does he do?
On the left, Lillian is offering orange juice to Mrs. Sakkaro. Mrs. Sakkaro responds disgusted and jumps back which is ironic because when you offer something to someone you do not expect them to act almost frightened.
This is an example of verbal irony from the time George was watching television and responding sarcastically to Lillian. Lillian was so obsessed with what the Sakkaros did for work, but George replies sarcastically that they do not know what he does either.