Sending My Sister Dick Pics

True story... one night about 6 months ago i was chatting with my older sister who is 70 and lives alone after being widowed several years earlier. most of out chats are normal brother and sister chats .. but sometimes a little sexual edge would crop up in my chats. on this particular night i had told her about taking some naughty selfies to see what her reaction would be , she just laughed as if it was no big deal. i then said well you haven't seen them so you don't know if its a big deal to which she just laughed again. so i summoned up all my courage and sent her a close up on my very hard cock. she replied that i wasnt kidding about them being naughty selfies. I thought wow my sister just looked at my cock and didnt get mad, so i immediately sent several more with some showing my full naked body and face so that she would know for sure it was me and my cock, She replied that i really was naughty and i asked her if she looked closely at them which she said she did and that she then deletes them so nobody would find them on her computer. since then i send her several of my dick pics every week and have even hinted that i would like to see her naked, but no luck there yet,. when we talk on the phone she jokes and calls me the family slut. I have been very lucky over the years and have sent dick pics to almost every woman i know without any issues.