The celebrities -- most of whom pretended to be regular Patriots' fans or the team's "locker room guy" and not themselves -- appeared in a Jimmy Kimmel Live Deflategate video, which has gotten more than 2.8 million hits since it was posted on YouTube Thursday.
Pretending his name was Brian Flanagan, Affleck confessed he was the perpetrator and said he wanted to turn himself in to the authorities.
"Let me ask you a question, all right? Who are you going to believe -- Tom Brady, the greatest man in all of humanity, or a bunch of [expletives] on Twitter?" Affleck as Flanagan wanted to know. "The scales of justice have spoken."
Numerous footballs were allegedly underinflated for the Patriots' AFC Championship Game against the Indianapolis Colts in a scandal the media has termed Deflategate. The Patriots are to play the Seattle Seahawks in Sunday's Super Bowl.