Gets sent to 16th century Earth, brainwashed to think you were born in the 16th century and always lived there, and then invited to a banquet. Being as it was considered an insult to leave a banquet table before the meal was over, you being brain washed tried to hold it in as long as possible. You however, are known to drink excessively, and have developed a bladder condition since being in the 16th century -- but you failed to relieve yourself before the banquet started. You made matters worse by drinking too much at dinner, and was too polite to ask to be excused. Your bladder finally burst, causing you to die slowly and painfully over the next 11 days.
Cause of death: Didn't make it to the bathroom