What does triple dog mean?

"Triple dog" typically refers to a playful or exaggerated challenge, often seen in the context of dares among friends. It's popularized by the movie "A Christmas Story," where a character issues a dare that escalates to a "triple dog dare," implying that it's an ultimate challenge that one must accept to avoid losing face. The term has since become a part of colloquial language to denote a serious or bold dare.