You catch the girls doing...something

It was around eleven when I woke up, needing water. The whole house was quiet and still...I kinda liked the house this way. Once I quenched my thirst, I headed back up stairs...or at least that's what I had planned.

I didn't want to be caught out of bed, as my Dad was strict with curfew rules, and when I heard a door open I leaped into an old empty closet to hide. After a few moments, I didn't hear footsteps and my heart calmed down. But then I heard another sound...

Was that...panting?

Seeing a hole large enough to peer through, I took a look. And my jaw hit the floor at what I saw...

Francine and Jane on the bed...naked...and kissing?!

"Mmm....such soft lips you have, Janey. I'm envious." Francine whispered, sucking on Jane's nipple. "Arms above your head....That's it, Janey. Good girl."

"Fr-Fran, I don't...don't think I can hold back much longer..." Jane panted, while whispering. "Get-Getting hot-!"

"Shh...just relax and enjoy Jane. I did promise to help you, release all that tension right?" She picked up something and made Jane spread her legs. Then opened my sister up with the Speculum from the attic. "I'll make you feel better..."

I then saw that Francine had put on a 'Strap-On' with the longest Dildo I ever saw. "Surely she's not-!" But she did! She grabbed Jane's hips and moved in and out of my sister's opened vagina...with the tool still inserted. Jane panted and her back arched, clearly in a haze while her friend rammed her womb entrance over and over.

Soon my sister cummed, while letting out a gurgled moan before passing out. Francine cleaned up everything, making it look like nothing had taken place.

My groin throbbed; I had to get to the bathroom and release or I was gonna go crazy. I quietly sprinted into the one near the room I was staying in, and took care of 'things'. My plan was to go back to bed and forget the whole scene I just saw; but when I came out of the bathroom, I came face to face with...