In 'The Bubble Boy,' what board game causes George to argue over a misprinted answer card?

In “The Bubble Boy,” what board game causes George to argue over a misprinted answer card? Trivial Pursuit. George and Susan play the popular question-and-answer board game with Donald, the isolated “bubble boy.”

The argument centers on a history question asking who invaded Spain in the eighth century. Donald gives the historically correct answer, “the Moors,” but the answer card supposedly reads “the Moops.” George spitefully insists that the printed answer must be accepted, even though the word is clearly a mistake.

The dispute escalates because Donald is already abrasive and George is unwilling to let a technicality go. Donald attacks George, and Susan intervenes by bursting the plastic bubble surrounding him. The scene is one of the episode's best-known comic set pieces.

The fictional incident reportedly drew on a real misprint noticed by a Seinfeld writer while playing a home version of Jeopardy!, although the episode changes the game to Trivial Pursuit. That real-world connection is an easy source of confusion.