J.R. remembered his Dad's observation when describing the "bottom of the pack": "Well ....... there's no card lower than a deuce". This fits the context since in talking about people we sometimes refer to strange behavior as "He's a card" or even that deuce comes close to the word dunce.
However this expression is turned upside down in the Video poker game of "Deuces Wild" (a favorite way to gamble for Wayne).
So which is it? "He's a card"? or "He's a wild card"?