Will Arnett Responds to Megan Fox's Sassy "#NotTheFather" Instagram Snap

This week, some rather bizarre news hit the internet: multiple sources reported that Megan Fox is pregnant with her third child after she stepped out at CinemaCon in Las Vegas on Monday sporting a growing baby bump. The pregnancy in and of itself isn't the weird part, of course. It's that Megan filed for divorce from husband Brian Austin Green back in August. This has led to lots of speculation as to who the father is, with the likes of Will Arnett, Shia LaBeouf, and Jake Johnson being thrown in the ring. For clarity's sake, these men have been Megan's costars in Teenage Mutant Ninja Turtles, in Transformers, and on New Girl, respectively. On Tuesday, Megan, who is already mom to sons Noah, 3, and Bodhi, 2, took to Instagram to laugh off and shut down the rumors. See her sassy snap here, then check out all these cute photos of her little ones.

Will Arnett has already responded to the picture, joking with Entertainment Tonight: "She said I'm not the father? That's a big surprise to me."