Mark had apparently told The Aristocrats joke. A joke that is known to have been controversial and very inappropriate. If anyone thought about it, it's quite amazing that it was permitted for Mark to even say "The Aristocrats", considering the show is targeted for younger audiences.
This is the 2nd episode that Mr. and Mrs. Turner went as each other; the 1st was Scary GodParents!
Timmy finding things that are green and looks like a tenacle that are not Mark Chang.
People saying "in my buisness that kid is (gym teacher, Mark Chang, etc.) handsome.
Mr. and Mrs. Turner appear back inside Trixie's house when Timmy is being thrown out of the party, even though they were thrown out themselves earlier in the episode, and appear outside again in the bushes moments later.
It seems extremely out of character and unlikely that Tootie would disguise herself as her chief rival to try to win the boy she loves. Also, how did she know that Trixie really did send Timmy an invitation?
Mark Chang should have been disgusted by the beautiful "girls" he was hanging around with since in most other episodes he is disgusted by beautiful girls, but he is attracted to Vicky because of her cruelty.
Cosmo claims to not be able to read in this episode, yet he had read perfectly fine in countless episodes before.
If you see closely, when Timmy becomes a dog, the iFake was light grey.
Timmy asked if he could have the milk, but in Anti-Poof he said he'll never drink milk again.
Why would Mark need a portable iFake in the first place when he constantly wears a Fake-ifer to change his form anyway?
At the beginning, Wanda's hair is light pink
When Timmy is back to his form for a moment when he is talking with Mark Chang he is buckless.