Jill returns home from work glowing because she has not only been given more responsibility at her job at the magazine, she’s been put on the assignment to do the cover! (What she actually does at this magazine is still unclear to me.) This means, though, that she will have less time for household responsibilities, and that Tim will have to pick up the slack.
In an effort to ensure everything runs smoothly, Jill leaves incredibly specific instructions – one might say micromanagey instructions, but I suppose that’s subjective depending on your tolerance and ability to absorb the intricacies of a task – for Tim to follow. Feeling constrained, untrusted, and hapless, Tim asserts that he’ll do things his own way.
And he does, to Jill’s chagrin. He amps up the dryer, which goes berserk, sets a gingerbread house on fire, and *gasp* instead of making the kids lunch, gives them lunch money. Jill decides it might be too much to work and fix Tim’s mistakes, but really, she just needs to get a prescription from Dr. Feelgood and take a chill pill.