Vampires and That Time of the Month, Part 4

Of course, Constantine preferred to think of himself as a pimp and Madge as the Madame, but deep down he knew that wasn’t really true. 
One evening, just after Constantine woke from his daytime sleep, Madge burst into his chamber.  It was unusual for Madge to disturb him so early, and he waited with trepidation while she caught her breath.
“Sir,” she finally managed to sputter.  “We have a developing problem.”
Knowing that nothing positive ever came after that kind of declaration and Madge was not one to exaggerate, he let out a resigned sigh and asked her to continue.
“You know how a couple of months ago we started letting women reside here permanently instead of just when they were dinner?”
He remembered quite well.  As additional compensation for their monthly donations, Constantine let some of his favorites take up rent-free residence in the mansion.  They came and went as they pleased, and he was thrilled that the usually empty mansion was better utilized. 
“Well,” Madge continued, “the close proximity has made them start to cycle together.  They all have their periods at the same time.”
Constantine frowned.  “I suppose that is what is meant by ‘either feast or famine’.”