> Seann William Scott Goon video interview
Scott revealed to Digital Spy that he came up with the initial idea to reunite the original American Pie cast.
"It was a long time in the making because I pitched the movie three years ago, the idea of bringing everybody back for a high school reunion. I had three years to go, 'Wow, how much fun is it going to be to play Stifler in his 30s'. It was a blast," he said.
Asked if Stifler is still the same character from the previous three movies, Scott replied: "He's regressed... I was like, 'He's gotta be just weird! He's older now, so he's got to be weirder and crazier'. I don't eat dog s**t in the movie, though, not like in the last one. Some weird stuff happens."
Jason Biggs, Tara Reid, Eddie Kaye Thomas, Thomas Ian Nicholas, Chris Klein, Alyson Hannigan, Mena Suvari, Shannon Elizabeth, Jennifer Coolidge and Eugene Levy are all reprising their roles in this year's American Pie: Reunion.
Scott's new hockey comedy Goon is out in UK cinemas today (January 6).
Watch the American Pie: Reunion trailer below: