Smart and Smarter/References

Cultural references

 * The episode's title is a pun on the film .
 * Henry, who is voiced by Simon Cowell, is a parody of Cowell's stage persona on .

Trivia

 * During the end credits, Simon Cowell makes comments about various members of the production team.

Continuity

 * There's a few references to "Lisa's Substitute":
 * Marge gives Lisa the paper quoting "You are Lisa Simpson" but Lisa says she already got one and points at the paper Mr. Bergstrom gave her, which is framed in Lisa's room next to a photo of Mr. Bergstrom.
 * The poster looking for Lisa that says "Free Beer: Now that I got your attention...", which is like the one where Bart's campaign poster says "Sex: Now that I got your attention..."
 * Lisa said her I.Q. is 159. In "Homer's Enemy", Homer states Lisa's I.Q. is 156. This could be explained by the fact that there is no universal scale for one's I.Q.  That is to say, the same person can achieve very different scores on different tests.
 * A Phonics Frog is seen within Bart's toys in "Treehouse of Horror XVIII".

Goofs

 * When Lisa first went on the giant tongue at the museum, there were no markings on it, but when Lisa released she was on the "bitter" side, the markings are seen.