After Gandhi flies above the cast on the dragon, but before the show cuts to credits, "For more information on raisins consult your local library" flashes on the screen for one frame.
The message that JFK says after crashing into the PTA meeting, when re-reversed:
'I am talking backwards and telling you... to watch Clone High... and for us to get an Emmy. I'm saying that backwards, 'cause it's sneaky.'
'I am talking backwards and telling you... to watch Clone High... and for us to get an Emmy. I'm saying that backwards, 'cause it's sneaky.'
After Abe talks to the original Abraham Lincoln, at the end of the song as Joan of Arc is singing "Abe" and just before Abe wakes up, for a single frame Joan is wearing a wimple and framed by a stained glass halo in the style of her clone mother, the original Joan of Arc.
When Cleo first smokes a raisin, the smoke she exhales forms the word "sex". This is a reference to a scene in The Lion King (1994) where a cloud of dust allegedly forms the same word.
When Abe and Cleo are on the roof, for a single frame Cleo and Abe suddenly appear naked, with Cleo's nipples covered by pink flowers.