“I guess I’ll have to ‘atone’ for that one!”
Explanation: The joke uses a clever wordplay involving “atone,” a key concept of Yom Kippur, which is the Jewish Day of Atonement. When the cantor (the person leading the prayers) forgets the words, they joke that they will need to “atone” for their mistake, humorously referencing the holiday’s focus on repentance and forgiveness.