When i got home from work my wife said her sister Brittany needed to to come over and talk to her. when i got to Brittany's place i didn't see her husband Marks car so i figured he must still be at work. i let myself in and found Brittany in the kitchen, we made small talk and then i asked her what was going on. she reminded me that her and mark were trying to get pregnant but she just found out that Mark had a weak sperm count and he couldn't get her pregnant. i said i was sorry for her and she said she was hoping i could help. she said since me and her sister had kids that i must has some potent swimmers and was hoping i could be a sperm donor. i was a little shocked and asked for a few minnutes to think about it. i stepped out and called my wife, she said she really wanted us to herlp her sister and said i should do whatever it takes. i went back in and told brittany i was in and asked how we should get strated. she told me that first her husband mark could not ever know about this, that it would crush him. i told her no problem and she led the way to her bedroom. in there she gave some lube and a sample cup and told me she need as big of a sample as possible for testing. once the doctor confirmed my swimmers were strong she would let me know when she was ovulating. she left the room and i started stroking it, after a few minutes i just could relax or focus. i called Brittany in and i told her this wouldn't work, she asked why and i explained my reasons and then said i just couldn't cum. then she stunned me, she said could she help! my wife's sexy sister was asking to give me a handjob, without sounding to eager i said yes please. she stroked me for a while and i was able to fill her specimen cup. she told me she would let me know when she was ovulating and when she needed my sperm. this is part 1 of Wife's Sister Needs My Sperm, it stars Brittany Shae and is a POV Taboo Handjob scene