Austin Powers star Mike Myers reveals that his two older brothers treated him like "a virtual punching bag" for most of his young life.

"I got peed on a lot and farted on. They'd make me drink Mountain Dew, but they'd actually wizzed in it," he tells host James Lipton during a special two-hour episode of Bravo's Inside the Actors Studio (airing Jan. 14 at 8 pm/ET). Myers then joked that he still is forced to down his brothers' toxic concoctions: "Just last Christmas, in fact."

The Toronto native admits that although he "was never considered funny in [his] house," he started acting when he was eight years old. "I did about 18 TV commercials," he remembers. "Gilda Radner played my mother in one of them. I fell in love with her and I cried at the end of [the commercial shoot] and my brothers called me 'Sucky Baby.' Then I was basically pickled in their urine. It's a long story.

"It's in my book," he adds in jest. "Why I Kill. It's coming out next year. Bantam, $4.95."

Myers vowed to appear on Saturday Night Live when his brother Peter spotted Radner on NBC's late-night comedy series. "We didn't know what the name of the show was. We watched it and I turned to everybody and said 'Someday I'm going to be on that show.'"

And although he has created some of SNL's most quotable characters (Linda Richman, Wayne Campbell, Simon, Dieter), Myers insists that he doesn't know what audiences will find funny. "Nothing that I've done I ever thought anyone else would get," he says. "You have no time when you're on Saturday Night Live to figure out and second guess what will be popular or not. You've got like a day to write."