don't really recommend probing to those depths but why try to create something that already exists.... the double head dildos that are shared by partners certainly would supply you with the lenght you are seeking ... wires are definitely not the insertion tool of choice especially when no matter how flexible you claim it to be there is no real direction control at those lenths and a puncture could definitely happen unless you have a conduit instead of a colon and intestines... you might have been lucky the first time but like everything else luck does run out

