An American man was so unhappy with the outcome of his penis enlargement surgery he sent a mail bomb to his plastic surgeon.Blake R. Steidler was so upset with the result of the operation he sent the doctor a jewellery box primed to explode when it was opened.However, the enraged man changed his mind at the last minute and telephoned police who found the bomb and detonated it in a controlled explosion, before arresting the 24-year-old.