My sis-in-law lives about 2 hours away in the mountains. She comes to visit several times a year. Most of the time the family comes with her but sometimes she comex alone. She arrived late on Thursday night. I normaly stay up late and my wife goes to bed early. She was all wound up from her drive and was not ready for bed either. I had a few shows on the dvr that I wanted to watch and she said to watch whatever I normally would be watching.
I had a couple 'real sex' shows recorded off of HBO. When she saw those she got curious because they do not have HBO at their house. She said I would like to watch that if you dont mind. So I said sure sounds good to me. We start watching the show and its a pretty good one. I start to get and erection. The room is pretty dark with just the TV on so I think I can get away with teasing myself a little thru my shorts. So maybe 10 mins later I am fully hard and its feeling pretty good. We have not said a word to each other and she says, 'I bet you would not have those pants on if I were not sitting here.'
'I said you are probably right, and admitted to having a hard on.'
She said, 'Well don't let me stop you from doing what you would normally do in your own house.'
I said 'What would you be doing if I weren't here,' and she said, 'probably the same thing.'
I told her we should go for it. She said you have to stay in your chair it would be ugly if my sister came up here. We desided that we should leave our pants on just in case but to go ahead and have our fun. So thats what we did, both of us masturbating in our own chairs. I did pull mine out the leg of my shorts and I did get to see in the leg of hers not many details but I got a pretty good view anyway. We both came quickly about the time the show was over. We excused ourselves to clean up and have not mentioned it since.