He said the only thing he could possibly say.
By the way, yesterday they were reporting he said "sweetcakes" and today it's "Sweet Baby," which I realize is similar, but to me "sweetcakes" is much worse. Sweet Baby could be a term of endearment. I know it isn't in this case, but it could be. Sweetcakes on the other hand, comes with an implied sneer every single time.Try saying it with the sweetest tone in your voice to your wife. She'll still slug you.