Fisting....

Has anyone ever known anyone whose done this or had this done to them?? Who cares what anyone else thinks. Im just curious. Me and my boyfriend get really freaky and he tried it on me.....all over time of course. He sucessfully did it one day but the most i could ever take down there was 2 or 3 fingers the most but over a 2 month time period he worked more in. It hurt sook bad but he got so much pleasure out of it. If i didn't want him to do it he wouldnt and he hasnt since iust because it wouldnt be an all the time thing for us personally .Im just curious if anyone else ever tried this