Hmmmm....... It's the strip that was suppoed to precede Thursday's.
Panel 1: We see him lean into the X-ray room and tell tell Helene, previously known as "The Assistant", to tell Elly the right way to do things.
Panel 2: We next see him and Elly as they work on a patient. He testily tells her he wants a specific tool and unsubtly reminds her to use its correct name.
Panel 3: The abrasive dodo demonstrates that he cares not a jot for his wife's feelings of panic and humiliation by hectoring her about the amount of time she's taken. Great. He's Frank Freaking Burns, DDS.
Panel 4: He compounds his error by informing the patient it's okay to treat THIS assistant like a shitheel 'cause she's his wife.
Hypothesis: John is a scumbag. He must die. Especially since he only did this to prove to himself that Elly should by no means get a job. Wonderful fellow, subjecting her to a rigged test.