The two girls bend over and try and see under the door. As they do their bikinis form a small bump at the top of their butts. The lump grows larger and larger until it works its way over the tops of their bikinis bottoms. The short tail sticks our of their backs as the stand back up. They bang on the door.
"let us out! You promised!"
"I don't want to be a filthy donkey!"
Ben hee hawed jovially as they two girls grow a long and full donkey tail. One blond the other with pretty red fur.
The glance in the mirrored wall to see their new tails and then look back behind them and grab them.
"No NOOOOO!"
"Stop this NOW!"