>Hi Dmitry,
>
>>Here is - hopefully a humorous - reply to your paper form example. Imagine that on the paper forms they would have a check box and the word "Male" and nothing else. So if you don't check it, you are a Female, pretty obvious. But imagine how many questions or raised eye brows this would generate :).
>
>That's why there's generally two checkboxes for that particular question! <g>
>
>~~Bonnie

I think there is a dropdown for this question (Male/Female/Unknown)

BTW, recently there was a funny question in MSDN T-SQL forum. Someone has SexualOrientationID field in his table.