My husband has a HUGE cock. 10" long and as big around as my wrist (and I don't have little dainty wrists lol). I can take him full in my ass with plenty of lube. I've also taken similar sized toys up there (when he's out of town lol). I have never used an enema and have never had any "surprises". There have been a few times where it just didn't feel comfortable and I have asked him to stop though.
If it's prostate stimulation I'm after then five or six inches is perfect, but if it's 'fullness' I'm after then I've had no trouble taking 12 or more inches. Likewise if I'm servicing a guy and he just wants to fuck and cum then depth isn't an issue so long as he takes it slow at first.
Nice! I have an average sized weener and my wife takes the whole thing with no trouble. No toys though, gotta get her into that. My wife never uses an enema either. Never even thought of it. She worries sometimes that I'll get a surprise but hey... were married, right? Not the end of the world and I wouldnt care. If anything, she'll joke before sex and say that she "cleared the way" earlier for me. Thats a good enough "enema" for me. She seems to be in tune with her body. We do anal a lot but we still can easily avoid times that would be "bad" for anal if ya know what I mean.
i'm more into girth than depth, but i have had a few 10 inch cocks balls deep and i have some toys that are in the foot long range i can take all the way...takes some time to work up to it though.
The well-trained can take about 10." That's the most I ever took in my ass. I can press for 11", but it takes work, not to mention lots of lube. When you have something that deep in your rear end, you just have to relax. You've got to do it when no people are around, because you'll make some noise.