The Simpsons SNEAK PEEK First Look Pics for Judd Apatow Written 'Bart's New Friend' 2015 Episode [PICS]

The famous episode of The Simpsons written by Judd Apatow finally airs this week... 20 years after the acclaimed Knocked Up and 40-Year-Old Virgin director wrote it. Apatow — who is also co-producer of Girls, which has its season premiere the same night — wrote the script for "Bart's New Friend" over 20 years ago when he was a "fledgling stand up comic" and huge fan of the show.

Dreams, people. They do come true.

Hell, even the episode's synopsis sounds amazing: "Homer goes to a hypnotist and ends up believing he is ten years old. However, when the hypnotist dies, Homer becomes stuck in his new age, so he bonds with Bart and refuses entry back into the responsibilities of adulthood."

Count us all in. All of us. All the way. Unsurprisingly, that sounds like a storyline from the show's first couple of seasons... and there's not even a Seth Rogen in sight!

Apatow told TV Guide that he wrote the script for "Bart's New Friend" when he "was 22, a huge fan of 'The Simpsons,' and hoping for a TV writing career."

"At the time," the This Is 40 Director told the magazine, "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."

Apatow explained that after mentioning the spec script in an interview, Simpsons producer Al Jean apparently read about it and got in touch. He also added that he's happy he didn't listen to his wife, Leslie Mann, "yelling" at him to throw "everything out."

But after 20 years -- and having written and directed plenty of material in that time -- Apatow admitted that it was a tough re-read. "It's a pretty rough script - when I reread it, I wasn't exactly glowing with pride - but Al and the staff did their Simpsons magic on it. The whole process blew my mind."

He added that during the table read with Dan Castellaneta, Julie Kavner, Nancy Cartwright and Yeardley Smith being Homer, Marge, Bart and Lisa and hearing them "putting their brilliant spin on something I wrote back when I was a dreamer, was one of the greatest days of my life."

You can watch the brand new, Judd Apatow-penned episode of The Simpsons at 8 p.m. this Sunday Jan.11 on Fox.