The “Dthrip” is not an intentional Easter egg but a . By Season 20, The Simpsons had fully transitioned from cel animation to digital ink and paint (Wacom Cintiq tablets, Toon Boom Harmony, etc.). The production workflow involved:
The “Dthrip” is a genuine, confirmed production error from The Simpsons Season 20, Episode 8 (“How the Test Was Won”). It is not a hoax, not a hidden joke, but a single-frame digital ghost that accidentally became a legend. the simpsons season 20 dthrip