I had very mixed feelings about going with Barb back to the "party" the following Saturday night. Yeah, I know I said I would, and I'd certainly enoyed myself with Geri, but... things got a little weird between my sister and me. I know it was just the excitement of going to a swinger's party (It's complicated; you should really read Chapter 1 if you haven't already), but she was acting flirty with me all evening: well beyond what she had to do to pretend we were a married couple.
I'd seen her almost-naked ass – I'm sure that wasn't intentional on her part – but then on the ride home she'd finger-fucked herself sitting on the seat right next to me. It's true I hadn't really seen anything, but I'd heard her cum. And my car smelled of it for a couple of days afterward (good thing my wife El has her own car and never uses mine).
But I had promised, and I don't think I've ever broken a promise to my twin sister, so I picked her up at 7.
Or at least I got to her apartment at 7. And she did seem to be ready, wearing a snug black dress that ended slightly closer to her crotch than to her waist. "What do you think?" she asked.
"Um, that dress is quite... something, alright."
She laughed. "Yeah, but I'm looking at it now, and..." she patted her behind. "Panty lines. I usually wear this dress without panties; but tonight, well, it's a warm night and there's probably be dancing outside again, so I want to have panties on."
"So this is about you being prim and proper?" I asked, raising my eyebrow.
"Don't be a smartass," she said. "Come with me, help me out here." I followed her into her bedroom, and as soon as she walked through the door, she pulled the dress over her head and tossed it onto the bed.
"Barb!"
"Come on," she said, turning to face me wearing nothing but a pair of skimpy black panties. The last time I'd seen her with this little clothing, we were probably 8 or 9. "Half the people at the party saw me like this last week, and you would have too if you hadn't been paying all your attention to Naked Geri. It's no big deal."
"They look like pretty big deals to me," I said, surprising myself.
"You're sweet," she said, stepping over to me and gave me a quick kiss on the cheek, her bare breasts brushing against my shirt. "Okay, let's see what we've got." She opened her closet, and looked around for a moment as I stared at her almost-bare ass. Come on, sister or no, how could I not?
She came away from the closet with a red dress. It came down no further than the black one had, but wasn't as tight. It was some kind of wraparound thing, the sort of garment only women understand, which once on covered her breasts adequately, but left exposed a large amount of cleavage. I'm actually not sure how much breast can be exposed and still call it "cleavage," but this certainly strained the definition.
"I wonder whether anybody found the panties I left behind last week," Barb said as we began the drive.
"They probably have a whole pile of them. Like the big 'lost clothing' box back at P.S. 18, remember?"
She laughed. "Tons of panties to sift through. Fun for pervs of all ages. And lots of bras."
"Not too many bras to be seen last week," I pointed out.
She unwrapped her blouse enough to expose most of her breasts. "Hey, you're right!"
"You wanna cover up those things before you cause an accident?"
"Aw, you're used to seeing them by now. I bet you're not distracted at all anymore."
"Yes I am. And we have to think about the other drivers."
"Spoilsport," she said, re-wrapping her top.
We got to the house where tonight's gathering was taking place. Apparently they switched around. "I hope they don't want me to host next week," Barb said. "Things could get a bit tight in my apartment."
"I'm not sure El would be happy if I brought the part to
our
house either."
Not to worry, though: I had a feeling they stuck to the big homes that were out of our pay grade. This one seemed a bit smaller than last week's but fancier.
We got inside, were greeted by the hosts, and exchanged our goodbye kiss without being reminded. It still felt like, well, kissing my sister, but this week I decided to loosen up a bit and have fun with the game. "Mmmm," she said afterward, "that's a kiss I could learn to like."
This time it was me giving
her
ass a light slap. "Go," I said. "Have fun."
Barb slipped off her shoes and pushed them under a chair, then hit the dance floor and immediately found a guy with whom she shared an interest. The evening's hostess came over to me and told me the basement had been converted into a small movie theatre, and suggested I choose any seat I wanted,
Interlude: Barb
Bob watched me dance for a few minutes, then the hostess told him something and he left the room. Well, his loss, because he missed what happened next.
I don't know the name of the guy I was dancing with, but he seemed very interested in how much cleavage I had on display. So I loosened the dress's sash just a bit, to give him a better look.
Well, it's hard to do that sort of thing with any precision while you're dancing, and the dress gaped open more than I'd intended. Almost all of one breast came into view, and then almost all of the other.
And when I tried to fix it, still gyrating about, I ended up undoing the whole thing. The dress came completely unwrapped in the front, exposing me completely. There was no point trying to hold it together anymore, so I let it slip off of me, dancing now wearing nothing by my panties.
(Good thing I'd decided to wear panties)