There was a comic who had her own variety show (Tracy Ullman), she had a cartoon short, called “the Simpsons”.
She said it was a time filler for the show, usually about 2-3 minutes.
That was in the late ‘70s.
Found this on youtube.
https://www.youtube.com/watch?v=Gp4TBRawxSA
or course I remember, unfortunately. but though it was closer to mid eighties. But everything’s a blur after my third long term relationship..