Is there a doctor in the house ???

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well ... i've always been fasinated by biology ... its kewl to know actually how thee human system works ... and hence if any of my friends get sick or rather i get sick (not a critical disease or some thing ... just those small hic-ups in medicines :D) ... i transform myself from engineer (yes am a engineer) to a doctor ... and try different KNOWN medicines .... what i would like to know is thdt what is the wildest thing that you've done playing or acting as a doctor ???