Judd Apatow is a well-known producer, director and writer in the industry and now his dream of writing an episode of The Simpsons is finally coming true.

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Apatow wrote an episode for The Simpsons 25 years ago when he was only 22, but it never made it beyond the script that is until now.

Apatow chatted with TV Guide last Wednesday about his script coming to TV screens soon. 

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He revealed to the site, "I was 22, a huge fan of The Simpsons, and hoping for a TV writing career. 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 where Homer gets hypnotized 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."

"Then, all these years later, Al Jean [The Simpsons' executive producer] calls and says, 'Hey, we'll make it now!'" Apatow stated.

Apatow shared he mentioned the script on stage during an interview and it hit the press, which Jean got wind of.

"Better late than never," Apatow revealed.

Apatow shared he didn't mind having his script reworked by those on staff of The Simpsons.

"They know their business. They were very collaborative and very respectful but everything they wanted to do was so much better than anything I could think up. They turned my messy little effort into Cinderella," he dished.

His episode airs this upcoming Sunday, Jan. 11 at 8 p.m. ET on FOX. It's called Bart's New Friend.