Valentine distribution begins, accompanied by a few paper airplanes. Everyone’s box is brimming with cards, except for Ralph’s, which is empty. Noting Ralph’s sad state, Lisa quickly re-addresses one of her valentines and gives it to Ralph. The card reads, “I Choo-Choo-Choose You, Happy Valentines”. Lisa cheerfully wishes Ralph a “Happy Valentine’s” as she returns to her seat. Ralph sighs heavily, clutching the card to his breast.

…

It’s the dreaded “Talk with the audience” part. As Krusty wanders the audience in search of a victim, Lisa quietly pleads, “Oh no, don’t show me with Ralph.” Too late. Ralph professes his love for Lisa and promises to marry her when he grows up. Unable to stand it any longer, Lisa lets out a prolonged yell and adds, “I don’t like you. I never liked you. And the only reason I gave you that valentine is that nobody else would!”

Freeze-frame.

Watching a videotape of the incident, Bart narrates the scene frame-by-frame. “Watch this, Lis. You can actually pinpoint the second when his heart rips in half.” He does so. Lisa covers her face.