Jonah Hill has revealed that he originally took against the idea for his latest film, 21 Jump Street, because he thought it "lazy".
The US actor stars with Channing Tatum as cops Schmidt and Jenko in the movie, based on the hit eighties TV series featuring Johnny Depp, about young-looking cops going undercover in high schools.
"Honestly, when they first came to me, it was just a dramatic script and I was really against it," the 28-year-old said.
"I really didn't want to make a TV show into a movie. That's really lazy and stupid, and eye-rolling and unoriginal," he added, so they decided to make an action comedy instead.
Jonah, who co-wrote the story and acts as an executive producer on the movie, said: "It started with asking myself what would it be like to relive the most important time period of your youth... high school.
"You then immediately revert back to the insecurities and problems you had when you were 17."
The star said his character, Schmidt, was "one of the more interesting" he's ever played.
"Schmidt just wants to be a good cop but he has insecurities that date all the way back to high school.
"When he goes back there undercover, he gets drunk with power, forgets about police work, forgets about his friendship with Jenko and enjoys his moment in the sun, living this fake high school life," he said, "which is better than the life he has as a guy in his mid-20s."