My dads family has always been close. Our house almost always had one of them staying with us, either his parents from Melbourne, his brother from Perth or one of his sisters who all live here in Brisbane. Sometimes when mum and dad went away for a holiday and didn't want my older sister or me with them, one of dads sisters would stay with us. I considered this extended family as quite normal until last year, just after my 18th birthday.
Mum and dad were going to Tasmania for one of their 2 week bush walks, and they had asked Aunty Sue to come and look after the place and make sure that we did not get ourselves into to much trouble. My big sister Shelly had had a massive party the last time no one had been around and it had taken weeks to clean up and fix the damage, so this time dad said Aunty Sue was going to 'look after the place'.
After Shelly dropped mum and dad off at the airport Aunty Sue laid down the rules, no parties, no late nights and no friends over when she was out. Shelly and I both groaned as we had hoped to have a small pool party the next weekend.
Well, all went along quietly (or so I thought), but I noticed that Aunty Sue and Shelly were getting along better than I had ever thought possible.
That night I had to get in the middle of the night for a piss. While I was in there, I went through the laundry basket as I often do, looking for my sisters underwear, the smell sometimes was enough to make me want to jerk off. This time, there were Shelly's undies, and some of Aunty Sues one as well. Aunty Sue is a lot younger than my dad, and at 26 get on well with both Shelly and I. Aunty Sue's undies had a large wet spot in them that smelt heavenly! On the way back from the toilet, I stopped by Aunty Sue's bedroom door to see if I could get a peek at the of the body that had made that wonderful smell.
The door was not closed properly, so I pushed it slightly to see what was happening. As I started to open the door, I could see a familiar blond head face down on the pillows, and as I opened it further, I could see that it was Shelly, naked, with her butt in the air. I peeked around the corner, and there was Aunt Sue, naked as well, but with her fingers up Shelly's pussy, and licking her clit.
As I watched the two of them, my cock started to get harder and harder. I had heard of girls doing this, but never seen it. Shelly started to moan louder and Aunty Sue was tonguing her faster and faster. I started to rub my 8 inch cock, milking it slowly but firmly. My cock had never been so hard, and I had never been turned on so much. Shelly started to milk her own tits, circling her nipples and pulling them hard. Aunty Sue placed a finger on Shelly's other hole and slowly started to fuck her from both ends. It was to much for Shelly, she let out a scream and her whole body shook.
