Whistling in the Wind

Summary
The Tibbles look the same, they act the same, they even have the same number of hairs on their heads. So if they are supposed to be exactly the same, why can Tommy whistle while Timmy can't?

Plot
The episode starts at preschool where D.W. was complaining about her puppet. Then the Tibbles show up and show they are the same, but Timmy can't whistle.

That night, Timmy daydreamed Tommy broke out of prison, but Timmy was captured.

The next day, Buster tried to teach Timmy, but to no avail. Later, Brain described that Timmy doesn't have the right mouth to whistle. As Timmy got home he heard Tommy whistling and got so angry they got into a fight. They got their front teeth loose, but their whistles became more screeching. At preschool, Tommy and Timmy were screeching so much, it broke the windows and the camera, finishing the episode.

Characters

 * Timmy and Tommy Tibble
 * D.W. Read
 * Emily
 * Buster Baxter
 * The Brain
 * Mrs. Tibble
 * Mincey Poodlemeyer (cameo)
 * Lisa (cameo)
 * Kyle (cameo)
 * Liam (cameo)
 * James MacDonald (cameo)
 * Amanda Hulser (cameo)
 * Edwin (cameo)
 * Arthur Read (cameo on title card for US only/mentioned)

Trivia

 * This episode reveals that the Tibble twins were born two minutes apart. This wouldn't be emphasized on until the episode "Two Minutes".
 * In the episode “D.W.’s Time Trouble”, Ms. Morgan says “Oh, but I remember that wonderful painting Arthur made when he was in preschool” in that episode as well.
 * Moral: Dont overreact for your own benefits.
 * Running Gag: The tibbles twins whistling.
 * Timeline: D.W. has her sock puppet from "The Great Sock Mystery".

Episode connections

 * Tommy plays the charango during the cold open. It was originally mentioned that the twins play the instrument in "D.W.'s Backpack Mishap."
 * Timmy and Tommy previously have a dream about going to jail in “To Tibble the Truth.”

Cultural references

 * The tune Tommy whistles is the Rondo alla Turca movement of Mozart's Piano Sonata No. 11 in A, K. 331.
 * Tommy's superhero costume resembles.