"Is it even possible to have things going in and geting out reverse...how to say this in English shit."
I'm not sure, but I think you're referring to "anal prolapse". And yes, it's quite possible.
My mother, a registered nurse, would tell stories at the dinner table about which resident of our small town visited the operating room with what object up his or her ass, or whom was found dead by paramedics with their pants around their ankles and a rope around their neck.
Actually it's 500 couples. I love Japs!