My partner and I have been enjoying anal sex for many years but have found it to be limited with her depth. We have tried many different toys, and different ideas but we can't seem to get more than about 7 inches inside her. We have seen videos of both males and females able to get 18 inches inside themselves and im wondering if anyone here has succeeded in such a task. I understand the the 'tunnel' (my vocabulary isn't great) does turn at some point which is where i imagine we are getting stuck at though i can't work it in which direction it goes. We are really keen on making it beyond this point so please post your ideas / experiences to help us along =) p.s. I'm rather tired so forgive the awful structure of my question.
People think way too much when they look at porn. It's porn! There is a limited amount of space in the human rectum. Try picking up an anatomy book and see for yourself. THe average amount of space in there is about 6-8 inches depending on the person. You know that sphincter (the exit hole bteween your butt cheeks) well you've got another one at the other end of your rectum that you can't see. That's what is preventing you from proceding any further into the transverse colon. Enjoy the area that you've got. You are messing with tricky things and can wind up wearing a colonoscopy bag for the rest of your life if you aren't. Contrary to what you see, real life is not porn.
Use a long, thin dildo to slowly open her up deeper. Both men and women can take very large things deep up there. It just takes work, time, and lots of lube. Make sure she has cleaned herself well beforehand. If there is fecal matter blocking the way, you obviously won't be able to go deeper.
If you're looking at the front of her belly, the rectum makes a right hand turn into the descending colon, that's the hard turn to make. Make sure nothing's blocking the way (try an enema first), be gentle with lots of lube, and try twisting whatever it is that's goin up there when it feels like it's stuck. Oh yeah, go slow when you reach this point. (edit) Make sure whatever you're using is soft and flexible, not hard and rigid (I doubt your cock's longer than 9 inches!).
Just be grateful she'll let you put anything up there. Lots of us sentenced to no anal fun due to silly hang-ups. Bums me, man.