Here's one for the record books. This guy was given the opportunity (or privilege) to apply his own anesthesia before undergoing a surgical procedure. It is unknown as to what type of surgery this man is having, but the doctor allowed him to inject himself with a syringe filled with a milky substance.
The was able to anticipate the exact moment the patient would lose consciousness. As soon as he applied the dose, the doctor counted down from 5 and the man was completely knocked out.