One of the brothers was talking about his Christmas confession, which didn't go well. For many reasons both genuine and scrupulous, he was wondering out loud if his confession and the absolution he received were valid.
Other friar: "I don't think I would want to hear your confession, except perhaps if I was the last priest on earth."
Scrupulous friar: "But Father, what if I was in danger of death, wouldn't you be willing to hear my confession then?"
Other friar: "Only if I was certain that you were really going to die."