Jerked off with sister in laws **

So my SIL and her husband were in town visiting for the weekend. We all went to my in laws house who lives near by and has a pool. At the house we all basically put our clothes in one of the spare rooms when we change into our bathing suits. The first day we were there, I went in to change out of my bathing suit and on the bed sticking out of the short shorts she was wearing that day was her tiny grey thong.

I have always fantasized about my SIL. She is very attractive and her body has curves in all the right places. Seeing her tiny grey thong I just couldn't help myself. I pulled them out and smelled the sweet smell of her **. Then I wrapped the around my ** and began to it. I was rock hard instantly at the though of this bit of material that covers her ** is not rubbing on my **. I knew I couldn't ** in that like I so badly wanted to, so before I got close I stopped an put them back.

The next day we were back at my in laws and I was much more deliberate. I made sure to let her get changed first. Then while everyone was out at the pool, I went to change and look for my prize. There they were, in her shorts again, a light grey tiny thong. This time I grabbed them and sunk into the bathroom. I took a few big whiffs, then once again wrapped the tiny material around my **. This time, there would be no stopping. I stroked my ** until I was on the verge of **. Knowing I couldn't ** in the **, I moved them to my face and buried my nose right in the ** while I finished off.

It felt so ** good. I cleaned up, returned the ** to their spot and made my way to the pool. No one was the wiser. Can't wait until next time she visits!