A woman went to her doctor for advice. She told him that her husband had developed a penchant for anal sex, and she was not sure that it was such a good idea.
'Do you enjoy it?' the doctor asked.
'Actually, yes, I do.'
'Does it hurt you?' the doctor asked.
'No. I rather like it.'
'Well, then,' the doctor continued, 'there's no reason that you shouldn't practice anal sex, if that's what you like, and if you take care not to get pregnant.'
The woman was mystified. 'What!? Is it possible to get pregnant from anal sex!?'
'Of course,' the doctor replied, 'Where do you think Democrats come from?'