I’m prone to saying to my children, “Willie, it’s go time.”
The source is not classic children’s literature, but rather classic arrested adolescent literature. Namely, another beer commercial that was popular around the turn of the century, back when I was watching hockey games on television every couple of nights:
I’m ashamed to admit that my allusions are thirty-five percent classic literature, twenty-four percent philosophy, and forty-one percent old beer commercials.