Another pool session

Then he heard Walter from outside: "Frank, I'm in the pool!".
He quickly ran upstairs into the garden to the Smith family's swimming pool ...
And was terribly frightened when he saw who was strolling naked in the pool!

"What the hell ..." he gasped.
"No Frankie Boy, it has little to do with religion!" came from her explanatory in Walter's voice.
"Walter!? But how ...".
"Sssh!" soothed the blonde in Walter's manly voice. "Don't cause a ruckus, it would only irritate the audience!" she said it and turned her head backwards, beaming directly at...