Sister Catherine was asking all the Catholic school children in fourth grade what they want to be when they grow up.

Little Sheila said,
"When I grow up, I want to be a prostitute!"

Sister Catherine's eyes grow wide and she barked,
"What did you say?!"
"A prostitute!" Sheila exclaimed.

Sister Catherine breathed a sight of relief and said
"Whew! Thank God! I thought you said 'A Protestant'!"