Peanuts by Charles Schulz for May 19, 1961
Transcript:
During the night, Snoopy paces back and forth on his doghouse roof. Snoopy thinks, "A cat! A cat! She said she was going to get a cat!"<BR><BR> Snoopy thinks, "A cat! A cat! A cat! A cat! This is driving me crazy! I've got to try to put it out of my mind!"<BR><BR> Snoopy lies down on the roof, eyes wide open.<BR><BR> Snoopy thinks, "It can't be done! It's like trying to forget the H-bomb!"<BR><BR>
Sorry, the what-what? Just kidding, but you don’t hear much about them these days.