(Strip Number 4665, Original Publication Date, 27 August 1986)
Panel 1: When Mike asks Lizzie what she's doing looking at herself in the mirror, she says that she's looking for mistakes.
Panel 2: She goes on to explain that Chris said that when the angels get too busy making people, they sometimes make mistakes.
Panel 3: She makes the mistake of asking a biased jerk who thinks that it's because she's a girl that they can't get along because he doesn't want to admit that he just hates sharing if the angels made any mistakes on her. Michael says that they did.
Panel 4: When he says that the mistake is that he's not the brother he asked for, Lizzie glares at him.
Summary: As I keep saying, Mike doesn't and can't see that the mistake is him. After John and Elly pass away and he can't be a kid any more, it might finally dawn on him that he'd have resented a kid brother too because he's a jealous twit but for the foreseeable future, he's gonna say shit like this.