Dominating your little sister

I stood there like that, shivering in the dark, not knowing what was happening for what seemed like forever. I’d figured out I was in one of the closets, but I wasn’t sure which. Then I thought I heard the doorbell downstairs and voices. And then it sounded like the voices were coming upstairs!
I got so nervous I was shaking like crazy when the closet door opened and I heard my big brother Tommy and two of his high school buddies.
“Holy shit! You really did it!” I heard his friend Chuck say.
“Yeah! What do you think? I figure we can either leave her up here while we go do something, or if you wanted, we could just hang out here and mess with her” said Tommy.
“Dang! She’s shaking like a leaf!” I heard Tommy’s other buddy Dean say.
“Well, what do you mean about messing with her, Tom?” asked Chuck.
“Oh, lots of things. She’s super-ticklish for one. I’ve never tickled her tied up before, where she can’t escape. Might be fun.” said Tommy.
I was horrified and gasping for breath I was so scared they might tickle me while I was like that.
“How about pain?” Dean asked, scaring me even more.
“Total baby. You can get her crying just from twisting her nipples or lightly spanking her.” Tommy informed Dean.
And he was right. I was already starting to snivel and tearing into the blindfold, not knowing what they might do to me.
“Yeah, fuck it. She’s a skinny little kid, but this could be fun!” decided Chuck.
“Yeah, I mean, she has no tits yet to speak of, just those mosquito bites. And almost no hips yet. Her twat is like a paper cut. Still hairless down there, too. I like how her little rear pokes out, though. I know it’s hard to see with her facing us like she is…” Tommy was saying about me.
“Can we see her whole body while we fuck around with her, Tom?” Dean asked.
“I don’t see why not” Tommy said as I suddenly felt a hand pulling down my panties until they were stretched tight between my legs above the knees.
I whined and pleaded behind the gag. This was totally humiliating for me. Somehow it was even worse knowing that my big brother and his friends were never kissed virgins in high school. I was brokenhearted that my big brother would do something like this to me. And then invite his friends over to join in on my degradation!
“Can we-“ started Dean.
“No man! You can’t fuck her! She is still my little sister, even if she is a little brat. You can’t hurt her bad, either. Pinching, spanking, squeezing’s about it” declared Tommy.
“What about-“ Dean said, apparently licking the air with his tongue.
“She’ll probably just taste like piss, but sure, knock yourself out man”
“So, how do we decide who goes first?” asked Chuck.
“Coinflips?” Tommy suggested.
“Deal!” his buddies said almost in unison.
When they were done, the first of the three to do as he pleased with me while I was tied up in the closet was…