A few months ago I one of my friends asked if I could drive her to work then some nurse clases she was taking because her family was going to be out of town and she doesn't have a license yet. I told her I could because I had nothing going on. I got to her house and her family was still there they where packing up the stuff they where taking and getting ready to leave. So I get my friend and we leave, as we are driving I ask her if she would be fine with me going back to her house since I lived a half hour away and didn't want to waste gas driving home then back down. She said ya that's fine I was going to ask if you wanted to go back there anyways. I get back to her house right when her family is leaving I helped them pack the last few things gave my friends 18 year old sister a hug bye and go into the house to go play video games. A few hours pass and my friend says I'm off of work can you come get me. So I pick her up and we chilled at her house for about 30 minutes then I go and drop her off at her class. When I get back to her house I was sick of playing video games and decided to watch some porn on my phone. I wanted to jerk off but I didn't want to just jerk off in the bathroom so I decided since in the only one in the house why not have some fun and go up stairs and see if I can find either one of her sister pairs of panties with out digging through their stuff. I went up stairs where only they are allowed they don't like having guest up there and I find the 18 year old sisters room I go in and her room had clothes all over the place I got lucky and found a pair of her panties on the floor I picked them up and smelled them then dropped my panted and started jerking off with them they where so soft then I got the idea to go to the younger sisters room to see if I could find a pair of hers to sniff and jerk off with too. So I went through the bathroom that connected the two room and looked around with the first pair of panties hanging off my dick. But I didn't find any her room was clean. So I get to the point of blowing my load and stop jerking off with the panties I didn't want to cum on them because I didn't want to get caught so I wiped a bunch of precum on the crotch of them and put them back in the same spot. Then I was thinking if I'm not going to blow my load on the panties I need to shot it some where so I went to the bathroom and thought the toilet but then I said no that gets to old after a while them I saw they had coconut conditioner so I unscrewed the top and blew a huge load into it closed it and shook it to mix it all up then put it back. I don't know which one of the two sister used it but which ever one did rubbed my cum into their hair everyday they used it. I'm hoping that the next time they go out of town and my friend asks me to drive her I can if both sisters panties and jerk off with them or at least the same sister but I'm hoping for the younger sisters panties.