A tourist from Bulgaria visited the United States on his first overseas trip. Upon arrival at the Immigration desk, he is visibly puzzled filling his visa application. The Immigration officer looks over his shoulder, and sees the tourist trying to write "Twice a week" into the small space labeled "SEX".

The officer explained: "No, no, no. That is not what we mean by this question. We are asking 'Male' or 'Female'."

"Does it matter?" the tourist answered.