Two priests were going to Hawaii on vacation. To improve their chances
of having a real vacation, they decided not to wear anything that would
identify them as clergy. As soon as the plane landed, they headed for a
store and bought some really outrageous shorts, shirts, sandals,
sunglasses, etc.

The next morning, they went to the beach, dressed in their  "tourist"  
garb.
They were sitting on beach chairs, enjoying their drink, the  sunshine  
and the scenery when a drop dead, gorgeous, blonde in a tiny bikini  came
walking  straight towards them. They couldn't help but stare. When she
passed  them, she smiled and said, "Good morning, Father," nodding and
addressing  each of them individually, then passed on by. They were
both stunned. How  in  the  world did she recognize them as priests?

The next day they went back to the store and bought even more
outrageous outfits -- outfits so loud you could hear them coming before you  
even  
saw them. Once again, they settled down on the beach to enjoy the sunshine.

After a while, the same gorgeous blonde came walking toward them.  
Again, she approached them and greeted them individually, said "Good morning
Father,"  and started to walk away. One of the priests couldn't stand it.

"Just a minute young lady," he said. "Yes, we are priests, and  proud  
of it, but I have to know: how in the world did you know we are priests?"

"Father, it's me, Sister Veronica."