They become sex slaves

Emma and Kaitlyn both awoke and knelt before us.

Master and Mistress," they say in unison. "We exist to serve you. Please use our holes as you see fit."

"Oh, we will," Zoey said. "But you'll have to wait till we get home."

"Yes, Mistress." the slaves said meekly.

"I love this!" Zoey said, kissing me.