Peanuts by Charles Schulz for September 19, 1980
Transcript:
Snoopy and Charlie Brown stand in the house. Charlie Brown says, "You know what you need to do? You need to learn to obey commands."<BR><BR> Charlie Brown points at Snoopy and says, "Sit!"<BR><BR> Snoopy walks away.<BR><BR> Snoopy sits in a chair.<BR><BR>
A similar gag was used on “Family Guy” about 20 years later.