"As soon as she had" joke

As soon as she had finished parochial school, a bright young girl named Lena
shook the dust of Ireland off her shoes and made her way to New York where
before long, she became a successful performer in show business.
Eventually she returned to her home town for a visit and on a Saturday night
went to confession in the church which she had always attended as a child. In
the confessional Father Sullivan recognized her and began asking her about her
work. She explained that she was an acrobatic dancer, and he wanted to know
what that meant. She said she would be happy to show him the kind of thing she
did on stage.
She stepped out of the confessional and within sight of Father Sullivan, she
went into a series of cartwheels, leaping splits, handsprings and backflips.
Kneeling near the confessional, waiting their turn, were two middle-aged
ladies. They witnessed Lena's acrobatics with wide eyes, and one said to the
other: "Will you just look at the penance Father Sullivan is givin' out this
night, and me without me bloomers on!"