After another year or two, I ended up with a new girlfriend.  Tall, skinny, and no boobs at all, but she fucked like a locomotive and gave great blow-jobs, too.  Plus, she was good with public sex, and letting strangers watch, or at least voyeur us having sex, which was quite a turn-on!  My little sister was menstruating now, and I couldn't just cum inside her without being a little careful any more, which complicated things!  One day, I happened to be fucking my sister when my girlfriend showed up.  She didn't knock on the door, as she knew our parents weren't home, and just let herself in.  My sister was afraid that my girlfriend would be mad, so she just kicked me out of her bedroom and shut the door, just as my gf came around the corner. 

I was naked from the bottom down, and my cock was still wet with my sister's pussy juices, as were my fingers!  My gf thought that I had just come out of the bathroom, and seeing me, got turned on, and we headed for my bedroom to fuck.  I jumped on the bed, and she knelt down to give me a blow job.  She sucked and licked the pussy juice from my cock, and then I stuck my sticky fingers in her mouth, and she moaned and moaned as she sucked them clean. 

"You like the taste of pussy."  "Ohhh gawd, yesssss!  I do!"  she admitted.  "Would you like to suck on my little sister's clit right now??" I teased, hopefully.  "OMG, is that...would she...now?...where?"  she was speechless.  I took her by the hand and walked to my sister's door and opened it.  The sight was awesome!  She was finger-fucking her pussy with her legs spread on the bed. 

My gf walked right in as if she had been invited already, and climbed in between my little sister's legs to her honey-hole.  She dove right in with her tongue, licking and sucking on my sister's dirty little cunt.  After a few minutes, I knew what my sister would like.  "Both of you turn over."  My sister took the cue and got on top to face-sit my gf.  As my sister pressed hard, I told her, "Make her eat your ass too!" So she ground her asshole and pussy into my gf's tongue as hard as she could!  My sister had the advantage, and she went to work on fingering my gf's pussy. 

I watched as she worked her fingers inside, and the finale was fisting my gf's hot cunt.  "Wow, I want to try that!" I exclaimed.  "You fist her pussy, I'm going to fist her ass!" my little sister said, "I've done it to Ana, so your girlfriend won't be any different!" she laughed with an evil laugh.  So we turned my gf over and made her put her ass into the air.  My sister went to work on the brown asshole, and my hand slipped into her pussy with a little grunting and pushing hard!! 

Soon my gf's pussy was gaping open hugely, and my sister was reaming her ass with a fist.  "Use both hands and stretch her pussy opening as wide and big as you can!  Make her scream!!" my little sister directed me.  I took her orders and put my fingers inside my gf's hole on each side and then started to spread her out as wide and hard as I could!  "Oh fuck, you're going to rip me open," my gf complained.  My little sister, turned sado-masochist, said, "Like this?? and she double-fisted my gf, and pried her cunt open to the point that it looked like I could shove a football in her cunt without touching her pussy lips!  My sister and I were double-teaming on wrecking my gf's pussy for any penis in the future! 

To shut my gf up, my sister sat on her face again, smothering her in pussy juice while we tortured her ruined, gaping cunt even further, stretching her cunt hole to a huge size that would never be able to recover from it!  My gf was so exhausted and sore when we were done, that she wanted to just go home.  What's funny is that two days later, she came back and wanted the same treatment again!  Turns out that we had made her cum like a dozen times - she had lost count!  So several more times, we tortured my gf's cunt with huge objects, the biggest things that we could find! 

One day, while my gf was getting her cunt fisted by us, my sister's friend Toby walked into the bedroom and said, "I'm ready!!"  his huge dick was already out and hard.  It was at least 9" long and very big.  "Oh wow!" I said.  My sister said, "Fuck this girls pussy really good, while we jerk on her nipples!  Oh, and cum inside her too!"  Without hesitation, Toby entered my girlfriend and began to fuck her sloppy loose pussy.  "Fuck, I can hardly feel her cunt!" Toby said.  "Yeah, we've fisted her and ruined it, lol!!" my sister added.  Nevertheless, Toby pounded away at her while my sister and I pulled on my gf's nipples, making her orgasm several times.  Toby finished inside her and we watched his cum puddle up and run out onto the bed.