Actor Ashton Kutcher has made a career out of being a practical joker, most notably in his MTV show "Punk'd." The show has run for eight years and the word punk'd is now even in the dictionary.

Kutcher talked to Ryan Seacrest on Seacrest's KIIS-FM radio show Wednesday and said he envisions something even bigger now: Punk'd: The Movie.

The 30-year-old star, who is married to actress Demi Moore, said he was walking down the street when the idea for a movie popped into his mind. He says he is keeping the idea under wraps for now, so as not to spoil anything.

Kutcher also told Seacrest about the origin of the word "punk'd." He said, "I made up a word." Seacrest also noted that Kutcher said he is the "most happyliest" married person on earth."

"My sister calls them Ashton-isms," said Kutcher, of the terms he comes up with.