Rent Day

When Agnes, 21, opened the door of her apartment and discovered on the threshold Genevieve, her old owner, she knew exactly what day it was.

"It's the rent day, huh?
"Absolutely," said the sixty-year-old, smiling with all her teeth
- Well ... let's go then, "sighed Agnes

Genevieve then took out the strange artefact from her pocket and handed it to Agnes, who in turn grabbed it. In a few seconds, the skin of Agnes became more flaccid and wrinkled. His hair grew gray. Conversely, Geneviève regained a juvenile luster, her body becoming firmer by the eye.
The two had exchanged their age. For such was the price negotiated by Agnes for the rent of her apartment. One day a month she offered her owner her youth. A fairly honest deal considering the beauty and size of the accommodation, especially as Genevieve was rather accommodating when sometimes the "rent day" felt badly.
Its only fault though: always be a little late to give back her borrowing.
Thus, Agnes had to ring at her owner's hom to remind her the deadline. She discovered her half-naked, and then foreshadowed how she occupied her evening.

"I'm coming right away," murmured Genevieve, "just let me the time to thank properly my "guest".
- ... OK, "sighed Agnes again. "ten minutes !"