Doonesbury by Garry Trudeau for May 19, 1986
Transcript:
Boy: I couldn't help overhearing your cries of anguish, old sport! Sal: Got any bright ideas for a term project for abnormal pysch, trippy? Boy: You're asking me? But I thought I was a mental case myself! Sal: Well, you are, but... Boy: What was that over your head? Sal: Nothing. What are you doing today?