(Strip Number 5149, Original Publication Date, 9 June 1989)
Panel 1: When Liz says that she's hungry and asks for a cookie, Elly says to have something good for her like a carrot or fruit because she's on a "How can I make sure my children are always wrong?" kick again.
Panel 2: When Liz tells her that she's not hungry for fruit or vegetables, Elly says something illogical and stupid about how that means that she was never hungry in the first place. What would have been less irrational is what Liz knows she meant in the first place: "You can either have what I tell you you can have or go without because I am not a short order cook!!!"
Panel 3: Since Liz got being stupid and weak-willed from her mother, it's not much of a surprise when Elly sets herself up to fail (and Liz to bad and wrong and mother-hating) by agreeing that she can have the cookie if she eats something healthy first.
Panel 4: Elly stands there fuming because Liz tells her that she decided to have the cookie first. This, of course, is because the crazy idiot turns every little thing into a pointless war because fighting is all she knows.
Summary: If she's going to set things up so that her children cannot ever please her the way she always does, her kids are just going to keep on having to do things like this.