Appropriately enough, this episode featuring Bugs Bunny's outing with Christopher Columbus in Hare We Go (1951) first aired on Columbus Day (observed) - Monday, October 11, 2021, though no mention of the holiday is made in the context of the show.
For Show & Tell Day, Toony's glamorous foster mom Goldie Fisher ("World Traveler") shares some rocks she found in Donegal, Ireland, and socially awkward Felicia Fangirl ("Another Pop-Culture Fanatic") brings her autograph book, where she collects signatures from people she knows and respects, rather than celebrities (so far she'd only collected her own autograph, but Bill and Toony agree to sign her book as well). Bill misplaces his bag of collectibles and tries to improvise an interesting history lesson about a stapler he finds lying around the studio. Ultimately Bill shows off his vintage "Green Hornet" PEZ dispenser, a rare piece of memorabilia from the short-lived 1960s TV show from the creator of the hit, Batman (1966).
Felicia Fangirl ("Another Pop-Culture Fanatic") is the only recurring guest who joins show regulars Bill, Toony, Mr. Quizzer, and Goldie Fisher, and makes a rare appearance without her counterpart Felton Fanboy ("Pop-Culture Fanatic").
At the time this episode first aired, The Fire Alarm (1936) had not yet been released by Warner Bros. on DVD or Blu-ray, though it was available on the HBO Max streaming service.