This was the first episode which Sparky was shown using his tail as a wand. This is also the first time Sparky used magic. But, it's a little weird why Timmy didn't just ask him to grow him back to normal.
This was also the first episode Sparky transforms. In this episode, he transforms into a bone.
Mr. Turner talking about his biceps and his place in the attic.
People saying 'magic weenie'.
People talking about cough drops.
Cosmo granting Mr. Turner's wishes.
When Timmy, Wanda, Poof and Sparky go up to the attic and Timmy starts to talk to Cosmo, Sparky disappears for a while.
Fairies can't poof up money according to Da Rules, but Cosmo gives Timmy's dad an endless supply of quarters, although it may be because he thinks he's a magic weenie, not a fairy.
After Sparky throws the ball, the ball Timmy's holding disappears.
It is unknown why Sparky needed to disguise, since he has always been himself in front of other humans besides Timmy. He might have done this because he was panicked.
It is revealed in this episode that if you shrink a wand, you only have the power to do silly tricks, but in King Chang, When Cosmo and Wanda got shrunken, they poofed up a tiny laser gun, though the laser gun did fail, so it still may make sense.