A pair of Irish ditch diggers were repairing some road damage directly across the street from a house of prostitution.
They witnessed a Protestant minister lurking about, then duck into the house.
"Would ye look at that, Darby!" said Pat. "What a shameful disgrace, those Protestant reverends sinning in a house the likes of that place!" They both shook their heads and continued working.
A short time later they watched as a Rabbi looked around cautiously and then darted into the house when he was satisfied no one was looking. "Did ya see that, Darby?" Pat asked in shock and disbelief, "Is nothing holy to those Jewish rabbis? I just can't understand what the world is coming to these days. A man of the cloth indulging himself in sins of the flesh. T'is a shame, I tell ya!"
Not much later a third man, a Catholic priest, was seen lurking about the house, looking around to see if anyone was watching, then quietly sneaked in. "Oh no, Darby, look!" said Pat, removing his cap and crossing himself, "One of the poor girls musta died...."