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The pair were promoting animated comedy Kung Fu Panda at the Cannes Film Festival when the actor told a Today Show interviewer that Jolie will soon have six children.
Teletext quotes reporter Natalie Morales as saying: "When I switched off the tape, Angelina said: 'I'll get Jack, don't you worry.' She wasn't angry at all, really calm.
"She said: 'What do you know about Jack? It's hard to get revenge because he's so out there. He has no secrets!'"
Jolie's ex-husband Billy Bob Thornton recently congratulated the actress on her pregnancy.
