Larry goes to buy a tackle box for his friend Funkhouser, but gets into a heated argument with a clerk who won't sell him one because he doesn't have a fishing license.
Later, while discussing the script for the Seinfeld reunion, Larry screams at a waiter who gave him Lime Diet Coke, when he had asked for Diet Coke with real lime in it. Seinfeld tries to rein Larry in, but this makes Larry so angry he tells Seinfeld the reunion show is off.
At Funkhouser's birthday party, Larry presents Funkhouser with a gift card for the Sporting Goods store that refused to sell him the tackle box. Funkhouser expresses his disappointment with the gift, using that voice of his that sounds like something from a radio PSA about symptoms of Acid Reflux disorder. Susie overhears this exchange, and cusses out Larry, which is hilarious because she's a woman.
Finally Larry is ejected, and on the way out he sees a plate of glasses of Diet Coke with slices of real lime on the rims. He tries to grab one, which prompts Funkhouser to punch him in the face. The scene freezes right before Funkhouser's fist makes contact with Larry's face, and the signature tuba theme begins playing.