There are videos that I have watched in awe as someone takes a monstrously long, wide object up their butt. I'm not sure I even want to get something five or six inches in diameter into my ass - I wonder about stuff just falling out of there once it's been stretched that wide. But depth, that's another story.
I've looked at medical sites to get the lay of the land, or perhaps because I want to be the lay of the land (groan worthy pun, right?) And I'm considering some options. It looks like something sufficiently flexible and maybe 1" in diameter would be conceivable. The longest insertion I've ever managed has been 10 to 12".
Last week I got myself what I considered a starter, a 20" rubber colon tube that is sold as FR34, so it's close to about 3/8" in diameter and I've spend a good bit of trying it out. About 10" in it stops. I twist it, turn it, push it some more. Try it with water going through, or just lube but it gets that far and no further. I tried using something larger to get the lower end of the system relaxed and stretched, but still haven't made it past that mark.
Once I thought I'd done it. The resistance all but vanished and I was approaching 16 or 18 inches buried between my cheeks, when all of a sudden the front end came back out. It had made a U turn inside. Clearly I am encountering serious resistance to this endeavor, like some colon traffic cop enforcing a one-way street ordinance at an inside corner.
Does anyone have any suggestions for getting past the that first major hurdle? I'd like to plumb the depths of my plumbing, and my depravity, but it seems I may need some sage advice on how to proceed without puncturing something.