You have to love Will Arnett's sense of humor!
As we reported, Megan Fox took to Instagram to dispel rumors about the identity of her third child's father. Turns out, Shia LaBeouf, Jake Johnson, and the Arrested Development star are "#NotTheFather."
While not confirmed, sources say the baby belongs to estranged husband Brian Austin Green.
On Tuesday, Will attended CinemaCon in Las Vegas where he jokingly appeared surprise that he wasn't Fox's baby daddy.
The 45-year-old said