Best animated TV plot holes of 2003

Thief Encounter - S1-E7

Plot hole: It's revealed at the end of the episode that the reason Tommie was sleep walking was because he was so nervous about the 5th grade test. However, he was sleep walking before news about it was given (ie: The beginning of the episode).

Baby-Fier - S1-E33

Plot hole: When Nani, Jumba, Pleakley and Stitch are turned into babies, Pleakley says he did oops in his pants, but it is well known that Pleakly doesn't wear pants, so why does he say that when it's not true?

Titans Together - S5-E12

Plot hole: After the battle, when Robin tosses Beast Boy the Brain for freezing, the Puppet King is seen among the assembled Titans (on the right, next to Herald and Jericho). Somewhat odd, considering that the Puppet King is a villain and not getting frozen up like his compatriots.

Worlds Collide: Part 3 - S3-E6

Plot hole: In their previous encounters with the Triceratons, the Turtles had to learn the hard way that the Triceratons breathe not oxygen but a combination of nitrogen and sulfur, which is detrimental to most Earth lifeforms, and thus had to wear special rebreathers. When the Turtles, Splinter, April and Casey enter Zanramon's throne room along with Traximus, none of them wear any breathing equipment to protect themselves from the hostile atmosphere.

Daniel4646