Anal rape

I simply had to post this question after reading a post from someone describing an episode of anal rape which was committed without warning. I've never understood how anal rape can occur suddenly (as opposed to pinning them down and forcing them to yield to the penetration). I simply don't see how it's possible to just penetrate the anus without extensive lubing and careful compliance from the other person. It's bone dry, it's tight, your first reaction would be to clench it... I mean, I often find it hard cramming my penis into a willing vagina, so God only knows how people manage this sort of thing. Any insights from seasoned practitioners?

Put the internet to work for you. via Personal Recipe 2629979