Peanuts by Charles Schulz for April 01, 1974
Transcript:
The Literary Ace sits on the doghouse and looks at a letter. He reads, "Dear contributor."<BR><BR> The Literary Ace's ears stand up. He reads, "We think your new story is magnificent."<BR><BR> Snoopy reads, "We want to print it in our next issue, and will pay you one thousand dollars." He jumps in the air.<BR><BR> Snoopy reads, "P.S. April Fool!" He crumples the paper.<BR><BR>
I think that’s the first time a Peanuts character ‘flipped’ from happiness instead of fright or being slugged.