Because the play was so terrible he needed to get out, and the best way to do that was to take a crying baby outside.
Chat with our AI personalities
That would be Stewie Griffin: The Untold Story
Brian tell Stewie the truth when they are stuck in the bank vault in the episode Brian & Stewie
You know Stewie has alot of enemy..
Of course not! Stewie is a human being, just like the rest of the family ^_^
Stewie told Brian he had killed Seven babies.