Arthur, Season 4 (1999)

Later, Arthur puts the finished model on a stool in his room.

Arthur:
It's the best thing I've ever made.

In his imagination, Arthur sits on a table on a stage. Beside him sits an astronaut.

Astronaut:
Arthur Read. You win the blue ribbon. [puts the ribbon on the model]

Arthur flies the Bell X-1.

The fantasy ends

Arthur:
This calls for a celebration snack! [walks downstairs with Pal]

D.W.:
[comes out of her room] Did I hear you say cookies? [sees the plane in Arthur’s room and foolishly sneaks inside]

Arthur:
[gives a dog treat to Pal] Good boy!

D.W.:
[runs around holding the plane] D.W. Read to headquarters! Sound barrier broken! What's my next mission, General? [sees the open window]

Arthur:
[pretends to be an airplane, makes airplane noises] Arthur Read, winner of 5000 blue ribbons, requesting landing coordinates! [makes airplane noises]

Outside the window, the model plane falls to the ground

D.W.:
[comes down] Arthur. You made that plane all wrong. It doesn't fly at all.

Arthur:
No, D.W. I made it exactly ri... [realizes what D.W. said] What?!