"The Simpsons" will continue its streaking as the longest-running sitcom after airing its "series finale" Sunday.

Viewers watching Sunday's 'The Simpsons' Season 36 premiere were told that it was the series finale — but it wasn't really the last episode.

After claiming Fox “has been trying to end” the show for years, O’Brien showed clips from what he said were unaired series finale scenes from “classic episodes,” like 1990’s “Bart the Daredevil” and 2000’s “Little Big Mom.

Bart celebrates his 11th birthday with a party attended with many guest characters and extended cast members from across the series. Including John Cena, characters that have died, and others rarely seen such as Danny DeVito returning as Herb Powell for a single line.

The Simpsons fans left confused as series unexpectedly airs its ‘final’ episode – with a twist - ’It’s true, Fox has decided to end ’The Simpsons’,’ viewers heard at start of new episode