On October 28, 1975 (50 years ago next month), #MaryTylerMoore delivered one of the great sitcom moments in “Chuckles Bites the Dust” (Season 6, Episode 7). After scolding her newsroom pals for laughing about the bizarre death of #ChucklesTheClown, Mary attends his funeral, stone-faced while everyone else chuckles at the eulogist. Then the switch flips: she loses it, giggling uncontrollably through the sermon until the rest of the congregation is glaring at her. Sometimes the funniest thing in t