Speak to Kimie and Caroline

You find them standing by a window and looking out.
"Hey, it's me Tim, you two really always together?" you say.
"Haha, yes, hi," Kimie says.
"What do you wanna do?" asks her friend.
"Hmm, I"m totally open to anything with you, to be honest."
"Hmm," Kimie starts, exchanging looks with Caroline. "Come with us."
The two lead you down the stairs and through the right corridor until the three of you reach the girls' locker room.
It's deserted. You all enter and close the door. Caroline and Kimie hop over to their regular locker and sit on the bench in front of it.
"So, what is it that you normally do in a locker room?" Caroline asks, flirtatiously.
"Well, you... you change..."
"Exactly. That's what you're gonna do now."
"But I have nothing to change into."
They both laugh. "Well," Caroline goes on, "then start with the first part, stripping..."
"Alright."
You start taking your clothes off one by one. Your cock is already rock hard, the gets harder and harder with every article you're doffing.

As soon as your're taking off your underwear, your hard-on stands up high to their amusement.
"Look at him, Kimie, he's all hard for us."
They stand up and walk around you. You look at them, excited to see what they're going to with you, but suddenly they bow down, take your clothes and then run out of the room before you can do anything about it.

Oh, shit. Now you're naked in the girls' locker room. And they are out there somewhere with your clothes. What on earth are you going to do now?