One of my dental colleagues, a very confident fellow and a competent operator, told me this true story many years ago.
One day, he had a nervous male patient, a well-built strong looking man. However, the patient was extremely anxious, as many dental patients often are. The patient needed to have root canal treatment and was convinced that he would experience much pain during the procedure.
As my colleague prepared his local anaesthetic syringe, he said, trying to be reassuring:
“Don’t worry, sir, after I have given you this injection, the procedure won’t hurt a bit!”
The patient turned to my colleague brandishing his tightly clenched fist, and said:
“You’d better be right because this will certainly hurt you!”