The new nun goes to her first confession.

She tells the priest that she has a terrible secret.

The priest then tells her that her secret is safe in the sanctity of the confessional.

She says, "Father, I never wear panties under my habit."

The priest chuckles and says, "That's not so serious, Sister Bernadette. Say five Hail Marys, five Our Fathers, and do five cartwheels on your way to the altar."