Have the X and O teams sit across from one another. Select a number from the envelope. The teams may discuss with their group to determine which celebrity to choose. Once the celebrity is chosen, everyone must be quiet. The teacher asks the celebrity the question, and repeats it one more time before they answer.
Celebrity answers either with a serious answer or an educated guess.
Teacher selects number from envelope to choose person on selecting team to agree or disagree. If the person gets it wrong, teacher replaces the number, gives the opposing team a chance to discuss, then selects a new number for a person from the opposing team. If they are correct, they get the spot. If they are not correct, the teacher tells the correct answer, but the spot remains open. Continue until a team wins.