During my last yearly physical, when my doctor was examining my lower abdominal area, I started to get an erection ... my doctor continued with the exam and did not seem to be bothered, but I could not control what happened; I became fully erect as he continued to examine my penis and genitals ... it had never happened before and I was very embarrassed ... I hope it does not happen again ... I am 67 years old, 5' 9" tall, and weight 164 lbs; I thought this was something that might happen to much younger men, not someone my age.