The Simpsons Movie courtesy 20th Century Fox The Simpsons Movie courtesy 20th Century Fox

After weekly letters from fans demanding full-frontal Simpson nudity, it's finally here. As The Simpsons Movie premiered in L.A. under a cloud of yellow confetti and a Duff Beer Blimp, writers Matt Selman, David Mirkin and Michael Price told TV Guide how anatomically accurate a naked Simpson really is.

"They have three fingers, what else might they have three of?" Matt Selman jokes. "People have never known what Simpsonite genitalia looks like, and now they do," adds David Mirkin. "We finally lived our dream."

The movie, which took four years and went through several scripts, is finally finished - but the show writers' work is far from over. There's still a new season of The Simpsons on the horizon. "We have a great episode that's set as a flashback to the '90s where Homer forms the first grunge band," says Michael Price. "We have a flashback fantasy where Bart is in the Sex Pistols and Nelson is Sid Vicious and Bart is Johnny Rotten. We have a big election-themed episode with Dan Rather and Jon Stewart [guest-starring], and a big opera show where Placido Domingo is the guest star and Homer's mother comes back, voiced by Glenn Close." - Reporting by Carita Rizzo