Thought would have been fairly EZ for proctologists. All I know is I always needed to be in the right position or bend the really soft dildo in the right direction to get it past that bend. The only concern I have is Anyways, I've actually seen people vids able to take this 3" wide monster that deep There is a muscle that holds up the sigmoid that is somewhat under your conscious control.
Weekly training would only come in to play for the extreme stuff, like fisting or worse:
OP: Deep Anal Penetration
The only concern I have is I never knew that! Why do you want it in your actual colon, if you don't mind me asking? It actually has very little to do with training, aside from being willful enough to completely relax while you have god-knows-what up your ass. If it is the later, I'll probably quit trying to do that completely, because that much pain is no pleasure at all It's the Rascal - Black Balled 11" Dong 2.