Panel 1: We start off watching Mike at work serving the public.
Panel 2: Next, we see Mike bid his replacement good luck after he changes shifts.
Panel 3: On the bus ride home, looking up and seeing an ad for all beef wieners gives him the wicked jeebies.
Panel 4: When he gets home, he gags because Elly has made hot dogs for supper like a big, insensitive idiot. This is because Elly is who she is: a woman who never asks herself what her children might actually like to eat because she takes that to mean that the children are the boss of her. Also, she wants a hot dog too but can't simply go to Mike's work place because that would never ever occur to her.
Summary: First off, aprilp_katje is right to say that Liz should have been the one to help a busy mom by making weenies for supper; this is because we know that she is actually going to say "How was I supposed to know he's started to hate hot dogs?" instead of engaging in passive-aggressive huffing and puffing.