The inner colon past the rectum isn't filled with as much nerves, I have noticed with swallowing an 18" long 1.8" wide double ender that there is only a subtle sensation that you can feel with the object sliding up the descending colon, it only feels like a bit of discomfort & bloatness mainly at first. You can feel something noticeable though when entering the bends like sigmoid or going into the transverse colon.
Also lubes will always thin out quickly inside the colon & the bulk of the thick lube either gets pushed far inwards past the dildo or just pushed back out through the rectum. Even though it may feel like that thin layer of lube is very slippery if you play with a dildo in your hands, it wont be enough to comfortable pass through tight bends.
Finally the thicker a toy the less flex it has, and the colon simple cant bend the dong like your hands can easily, so you have to rely on the dong being pushed into the colon wall & eventually turning under pressure. So when passing through the tight bend into the transverse colon there is some noticeable tension/sensation like what you feel when stretching your muscle, almost bordering on slight painful. btw the sigmoid feels like it can change shape before & after a clean out, however I don't think the bend near the top of descending colon changes as much.
I won't to know how much force can you apply by your hand to get it into the transverse colon before you can do damage?
I have heard that if not careful that area can tear from where its mounted.
When major damage happens do you usually feel something quite obvious or is it something more just a sore discomfort?
atm with my 18" dong i'm applying about 1-2 kgs of pressure to try & get it into the transverse, however this dong is too short. Normally with wider shorter 2.2" toys I apply much more force going through the sigmoid, in fact its easier to sit on the toy pushing out & it goes through without much pain at all.
The problem is if you don't apply enough pushing force you simple won't get it in deep.
Please help, thanks