Doonesbury by Garry Trudeau for September 19, 1992
Transcript:
Alex: Daddy! Daddy! Great news! Mike: What is it, squirt? Alex: They're giving the old writer another chance...there's going to be one final family values test! I forget what it's called, but they have to dip the feature in water or something... Mike: A litmus test? Alex: That's it! If we don't turn pink, we're home free!