Discovered!

From your face-down position on the floor all you can see is a pair of scuffed work boots. Seconds later they're joined by another pair. You crane your neck, but can't lift your head further than will allow you to glimpse four demin-clad legs. You could roll onto your side so that you can look up at your visitors, but you're still afraid that any movement will send you over the edge and into another shuddering climax. And rolling over would expose the whole gleaming front of your body to their gaze.

You don't trust yourself to speak. But there are voices from above you.

"Hey, looks like we've interrupted a party! Hey kid..." Presumably he's talking to Amy. "Hey kid, who's your friend? Who's in the house besides you two?"

Amy sounds friendly and chatty. Mom has always worried about her overconfidence around strangers, but her concern has been that she'd get herself into trouble, not that she'd cheerfully introduce two strange men to her tied-up big sister.

"She's my big sister. Her name's Karen. We've been playing tie-up games and I won because she can't get loose. And I remembered something she'd got hidden in her room.."

You have to stop her talking. She'll tell them about the vibrator, and about how you are all alone.

"Please. Please, just go. Amy - show the nice men to the door."

"You look as if you could do with a hand there miss." One of the pairs of boots steps towards you. Their owner kneels beside you and you feel a hand testing the tightness of the ropes around your wrists. For a moment you dare to hope that he'll untie you. Then the hand moves down to where the crotchrope emerges from between your buttocks and gives it a sharp tug.

"Arghhh... Urghhh... Don't. Please - don't."

"Hey, I think we've got a hot one here! She's soaking wet between her legs. And listen to that buzzing. I think she's got a vibe in her. Is that right honey?"