a) the one that features him riding her all day and then telling a patient it's okay if he insults her because she's just his wife.
b) the one where he stands there and lets his pal, pathetic skirt-chasing momma's boy Doctor Ted, pay her left-handed complements that make her feel bad about herself.
c) the one where he tells her not to take being called a klutz and dummy seriously?
The answer is C: We see an increasingly-defensive John telling an infuriated Elly that dentistry is an exacting business which makes him tense and liable to snap at her so she should not take being called klutz and dummy so personally. This is, of course, JFTF digging his own grave in four dialog-heavy panels because not only was he a chauvinistic ogre, he was the stupidest man on the face of the Earth.
Panel 1: A panicked John tells an infuriated Elly that dentistry is an exacting business and sometimes he gets tense.
Panel 2: He then says "So I got impatient. Maybe I barked at you a few times."
Panel 3: Her look of rage tells me that his saying "So what if I said you were a klutz and a dummy?" has failed to smooth things over.
Panel 4: I doubt his whining "Did you have to take it personally?" will turn the trick even if, as I supsect, he'd do so with other assistants.
You can see why the Hell Rod pleaded with her to make John less of an arsewipe. The notion that people thought he acted like that in real life and was judged accordingly went in one of Lynn's ears and out the other.