Sir has tried on several times to see if He can fist me and we have come to the conclusion to we are not compatible this way, i am too small and his hand too big to make it pleasureable in any way, and i have also had 2 children, both had large heads and both came out that way..lol....Though saying all that i do love the feeling of being "stretched" and "full"..it is very erotic and extremely submissive to me personally to be able to relax that much and allow Him to enter me as much as i can physically take.....same as above though, i have no idea what effect it may have long term if it was done all the time, then again i dont think it would be so pleasuring to do it all the time, would lose a lot if the mental impact of the act....looking forward to hearing more on this thread..hugs xXx