Will Ferrell and Mark Wahlberg are back but they brought along a new cast that just made this movie funnier than ever.

Holidays are all about bringing the families together! However, this Christmas two complete opposite families are coming together for a movie you cannot miss.

Brad and Dusty, two dads who share custody of the same family, are having their dads home for the holidays this year.

Now, who did they cast to play these dads? John Lithgow and Mel Gibson!