No haven't done that but a few years back I had a swinging fuck buddy (who was married). She had the same name as my sister and I sent her a pic of my cock. The minute I sent it I thought oh fuck I think I've sent that to my sister. I felt physically sick until I established that I had sent it to the right person. Taught me a very important lesson though. I never quite worked out what I'd say to my sister if she had got a pic of my dick. Doesn't bare thinking about