No, I am your father! Will Arnett got in on the fun and joked about the questions surrounding the paternity of Megan Fox’s third child in an interview with Entertainment Tonight.

Fox, 29, jokingly posted a collage of former costars Arnett (Teenage Mutant Ninja Turtles), Shia LaBeouf (Transformers) and Jake Johnson (New Girl) with the caption “#notthefather” on Tuesday, April 12, just a day after she debuted her tiny baby bump in a form-fitting dress at CinemaCon in Las Vegas.

“She said I’m not the father?” Arnett, 45, told ET, feigning shock. “That’s a big surprise to me.”

“There are like 50 jokes that come to mind, but we live in a social media era and I’m not going to say ’em, you know what I mean?” the Arrested Development star said with a laugh. “My publicist just shook his head at me. He knows me really well. There’s so many things I would say if [these cameras] weren’t rolling.”

Sources previously confirmed to Us Weekly that the real father is Fox’s estranged husband, Brian Austin Green, who was noticeably not included in the #notthefather image. Although the model filed for divorce from the Beverly Hills, 90210 alum, 42, last August after five years of marriage, an insider tells Us the former couple have been working on their relationship. They frequently have been spotted on outings in L.A. and spending time together with their two sons, Noah, 3, and Bodhi, 2.

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The expectant actress — dressed in a billowy maxi dress — and the Anger Management actor even stepped out together the day after CinemaCon to get lunch in Santa Monica. See how Fox concealed her bump before she was ready to reveal her baby news! 

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