The only possible way you could get a girl pregnant from coming in her rectum is for the semen to leak out and find its way to her vagina.
Frankly speaking the rectum is so full of bacteria I don't think any sperm would live long enough to make the journey should they leak from the back door and find the front door. Though as the saying goes anything is possible.
Xui answered Tuesday January 3 2012, 2:52 am: It's possible as sperm can leak, If you are planning on having anal sex I would highly suggest you use a condom to be safe. [ Xui's advice column | Ask Xui A Question ]
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