After only five 'Simpsons' episodes aired, I sat down and tried to write one when I was in my early twenties. And what it was about was they went to see a hypnotism show and at the hypnotism show, they made Homer think he was the same age at Bart. And then the hypnotist had a heart attack. So now Homer and Bart became best friends and they spent the rest of the show running away because Homer didn’t want responsibility and didn’t want to be brought back to his real age. So I basically copied that for every movie I’ve made since.
Now, sitting down for an interview with Conan O'Brien on the talk show host's online chat series "Serious Jibber-Jabber," Apatow says that after his story hit the web, "The Simpsons" called to tell him they'd be shooting the episode next year. Apatow notes that he'll be getting paid $2200 -- "Now I can retire!"
Check out the full hour-long interview below -- the "Simpsons" story starts around 5:20. Apatow's been going back and forth between film and television throughout his career, with his small screen work including "The Ben Stiller Show," "The Larry Sanders Show," "Freaks and Geeks" and most recently Lena Dunham's "Girls." O'Brien was a writer on "The Simpsons" from 1992 to 1993.