Calvin and Hobbes by Bill Watterson for July 13, 1989
Hobbes: What are you writing? Calvin: I'm telling these companies I intend to boycott all their products if they don't pull their ads from a TV show I find offensive. By golly, if these companies are going to support objectional TV programs, I'll take my business elsewhere! Maybe I can scare away the advertising dollars and get the show cancelled. Hobbes: Why don't you just watch the show? Calvin: This clean wholesome television! Ughh, it makes me sick.