Doonesbury by Garry Trudeau for September 25, 1981
Transcript:
Mark: Mr. Cleaver, I'm sure many people are wondering right now if there isn't some less radical way of controlling the spread of preppies than aerial spraying... For instance, have you considered disrupting the reproductive cycle of adult preppies? Voice: Yes, but the problem there is that preppies mate so rarely, and then only on the advice of their family attornies. Mark: How about cross-breeding them with high school graduates? Voice: Well, we're trying to avoid that kind of social engineering.