How to prepare for anal sex with too big penis?

Question

My boyfriend suggested trying anal sex. I don't mind anal sex, but my boyfriend's penis is too big for me, 9" length and 2" wide (7,8" circumference). How to prepare my anus for such a penis and how long will it take?

Answer

Start with a finger or butt plug. Make sure to invest in some form of lube also have your SO insert in increments to allow your body to get use to it.  Start with just the tip as many strokes as it take for You to get comfortable then go deeper as much as you can take... don't rush it and donut feel like it has to be just as long as vaginal sex (my first time was maybe 5 minutes)...You have to relax and talk him thru it based on your comfortability or else you will be tense and it won't be enjoyable. Lastly, if you can make it past the fittest time try to keep it going the more you're able to do it the better it'll start to feel.

Answer

If you google you'll probably get better answers. Start off with like fingers and gradually increase size. Some people use butt plugs "trainers".... be relaxed and calm. I heard having an orgasm before you try helps things relax. Lots of lube. 
Good luck!