From his treehouse, through a telescope, Bart observes men chugging the tonic and running indoors to their female partners.
Bart: OK, it's not painfully clear the adults are definitely paving the way for an invasion by the saucer people. Milhouse: You fool! Can't you see it's a massive government conspiracy? Or have they gotten to you too? [he and Bart start wrestling] Lisa: Hey! Hey, hey, stop it! Stop it! Why are you guys jumping to such ridiculous conclusions? Haven't you ever heard of Occam's Razor? "The simplest explanation is probably the correct one." Bart: [condescending] So what's the simplest explanation? Lisa: I don't know. Maybe they're all reverse vampires and they have to get home before dark. Everyone: Aah! Reverse vampires! Reverse vampires! [Lisa sighs]
In the treehouse, the neighborhood kids try to figure out what's up with the adults.
Bart: So finally, we're all in agreement about what's going on with the adults. Milhouse? Milhouse: [steps up to blackboard] Ahem. OK, here's what we've got: the Rand Corporation, in conjunction with the saucer people -- Bart: Thank you. Milhouse: -- under the supervision of the reverse vampires -- Lisa: [sighs] Milhouse: -- are forcing our parents to go to bed early in a fiendish plot to eliminate the meal of dinner. [sotto voce] We're through the looking glass, here, people... -- A conspiracy theory Oliver Stone would be proud of, "Grampa vs. Sexual Inadequacy" choice