Hey man, I just wanted to say: please be careful. If you accidentally tear your intestines, you will have a medical emergency (a large number of bacteria entering the bloodstream). This is so serious that up to 50% of people die. (Search for "ruptured bowel" if you want to know more.)
I'm not a doctor and I don't know how strong the intestines actually are. But in my opinion, putting things deep into one's ass, is too risky.
Stay safe, my friend!