She is

“Guh” You explode, needing to slow your thrusts.

“Time!” You hear Sarah shout.

Shoot, didn’t make it. You reach down for your Speedo but Miranda swipes it away.

“Wha-“

“MY flag,” Miranda teases with a smirk. She peeks down and turns bright red when she sees your shrunken button. “I am definitely not done with you.”

The door opens and Sarah walks in. “Well?”

Miranda laughs spinning your speedo around her finger. She bends over to pick up the rest of her suit, giving you an eyeful of her bare ass.

And suddenly you’re hard again. And suddenly you’re determined.

You grab Miranda by her ass.

“Ah! Hey no fair time’s up right?” Miranda says. But you can already feel her trying to back her hips into you.

Sarah clearly intrigued by the development shouts outside “just getting cleaned up in here!”

Then she turned to you “I might be interested to see what else could happen in the next 15 seconds.”

You didn’t even wait for her to finish the sentence and you were already thrust inside of Miranda. This time you explore her body with your hands. You stand her up to bring her head closer to yours, turning her head around to kiss you.

Sarah’s hand wanders between her own legs, eyes locked on you both.