The Apatow-written episode has been titled 'Bart's New Friend', reported Ace Showbiz.
In the episode, "Homer gets hypnotised and thinks he's a 10-year-old. He has such a great time being Bart's friend that he doesn't want to become an adult again."
"I was 22, a huge fan of 'The Simpsons', and hoping for a TV writing career," Apatow recalled what prompted him to write the script for the animated comedy.
"At the time I was a fledgling standup comic and people said, 'If you want to write for sitcoms, you need to do spec scripts.' Only six episodes of 'The Simpsons' had aired at that point but I tried to copy the style and did a spec script.