Jessica Simpson was confused that unprotected sex could lead to a pregnancy, and even Kim Kardashian didn't seem to get how babies were made -- but we expected better from Halle Berry, who's "surprised" she's knocked up again.

Then again, we'll give her a pass. She's 46 and thought all this accidental conception stuff was behind her.

“I feel fantastic. This has been the biggest surprise of my life to tell you the truth,” Berry told the New York Post. "I thought I was kind of past the point where this could be a reality for me. So it's been a big surprise and the most wonderful."

While some media outlets report she's having a boy this time (she's already the mom to 5-year-old daughter Nahla, whom she had with model Gabriel Aubry), she says she doesn't yet know the sex of the fetus she conceived with fiance Olivier Martinez.

She may not know yet, but we're sure TMZ has a spy in there somewhere.

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