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Believe it or not, Ben Affleck has been in show business most of his life.

As the 44-year-old Accountant actor told Jimmy Fallon on NBC's The Tonight Show Thursday, "I did do some child acting. Luckily I didn't end up on a show and get famous and go on crack and get crazy. I had a normal childhood. My mother let me go do this thing and then forced me to come home. It was a PBS series called Voyage of the Mimi. It was for kids. Educational, kind of."

"You're laughing, but it's not a joke! It combined science and math topics with an interesting adventure that a young man took with scientists," Affleck said. "I still feel like I have to pitch it!"

In hindsight, Affleck said, "It was a lot of fun. We had a good time."

The 13-episode series aired in 1984, and 30 years later, it was released digitally via iTunes U.

Fallon showed a clip from one of the episodes, and Affleck's Boston accent was as thick as ever. The actor joked about his prepubescent days, telling the host, "That was before I had testicles. I used to get all mad at the operator. I'd be like, 'I'm not a woman!' She'd be like, 'Sorry, ma'am.'"

Affleck had a blast working on the TV series back in the day, but he doesn't want any of his own kids getting into show business at such an early age. "I would do whatever I could to discourage that," the actor-turned director told E! News in 2013. "My kids have enough issues of being exposed in ways that I don't want them to be exposed, in magazines and shows and stuff."

(E! and NBC are both members of the NBCUniversal family.)