(Strip Number 514, Original Publication Date, 10 December 1983)
Panel 1: It's several hours after the shopping trip but Elly ain't done angsting yet; that's because she's beside herself with grief that Lizzie told John that Mommy had bought him a brown jacket for Christmas.
Panel 2: Since Elly is a stupid jackass who doesn't want to admit that Lizzie doesn't freaking know any better because it would get in the way of her playing the damned victim all the slagging time, she whines "How could you?? You've spoiled the surprise!!"
Panel 3: Lizzie reassures Elly that she's done no such thing.
Panel 4: Lizzie (who looks an awful lot like a damned Muppet) says that John was surprised; this further angers Elly.
Summary: The reason for this pointless anger when confronted with the predictable is because Mommy is the creation of a wingnut who'll probably issue forth a chunk of bullcrap about how children evilly refuse to understand what secrets are to make Mommy unhappy. Anything to avoid admitting that children aren't tiny adults.