First a little background.  My sister and I had been playing naked together since we were kids.  It got sexual when I was 13 and she was 9.  That was when we started oral on one another and I eventually fucked her.   After High school I moved away to go to University and she followed suit when she graduated.  She moved in with me and we continued our relationship, except with a twist.  She was now very dominant and I was very submissive.  It wasn't long before she had me servicing her friends, sucking cock and getting fucked.

     Anyway, in our second year together I was at one of her college fundraisers when I won a 'spring break' in Cancun draw.  She immediately said we were both going.  We are both slight of build and she can pass for a young teenager.  When we got to the hotel we immediately went to the pool to hang out.  She was topless (very small tits) with a tiny bikini bottom.  As we were tanning we oiled each other up, which left me with an erection poking out of my speedo.  A couple of black women came over and started talking to us.  It soon turned sexual and we were headed to thier room.  The one reached into my speedo and started playing with my cock and the other was fingering my sister!  These women were tall and wore conservative swimwear compared to my sister and I.  

     When we got to thier room they had us strip and one started sucking my  7" cock.  "Not bad for a white boy," she commented.  The other turned to my sister and said, "now it's your turn."  She removed her swimsuit and out popped a huge black cock!  Both of them were transexuals.  My sister was in awe as she was pushed to her knees and that cock was pushed into her mouth.  She was soon choking on it.  I came quickly and I was soon sucking on what turned out to be An 11" BBC.  They explained that they were in Cancun scouting for thier online porn channel.  One of the scenes they had planned was having a white couple being gangbanged by BBC's.  When they saw us at the pool they knew they had to have us.  By the time they finished explaining everything to us, we both had sucked huge loads from thier respective cocks.  We were both ready for more, but they said to wait until tomorrow.  If we were interested we were to meet them at the pool early next morning dressed exactly like we were today.  My sister and I left, both horned up for tomorrow.

     The next morning we showed up at the pool bright and early.  There was no one at the front desk or at the pool.  No sooner had we arrived when four big black guys showed up.  One guy set up a camera and the other 3 converged on us.  They commented on our slim/petite white bodies as they converged upon us.  We were soon on our knees with a huge cock in our mouths.  Soon after another cock was positioned at our assholes and we were being spitroasted.  My ass was used to being fucked, but my sister was struggling to accomodate the monster in her hole.  They noticed I was erect, enjoying the whole scene.  They quickly realized I was a faggot.  They took turns fucking our holes, and even Dp'd my sister.  When they were done they had me clean my sister's holes with my tongue.  She was totally spent and her holes were gaping!

     As one guy was putting away the camera the 'gurls' showed up.  They talked to the guys, laughed a lot and then approached us.  "The guys said you did great, especially the little faggot. Let's go to your room, as the pool is about to open and finish up some of the paper work."  Both exhausted we let them lead us through the hotel lobby, naked and covered in cum to our room.  there was a guy at the desk and he just smiled.  Once in our room they wanted to see our identification to make sure we weren't underage, especially my sister.  The one noticed that we had the same last named, but that we weren't married!  We were brother and sister.

    That got them talking and while my sister and I serviced their big cocks they figured out an incest scene that they wanted to film before we left.  They both came at the same time and told us to hold thier cum in our mouths and then had us kiss and exchange the cum and then swallow.  As we were doing this my cock got hard.  They had my sister suck on it for a bit and then had me fuck her in the ass.  The BBC's had stretched out her hole, but I pounded away unti l I came.  Then they had me lick my cum from her hole.

    "You guys are going to be famous," is all they said as they left.