1997: In my wilder days as a winter surfer we all knew about the sickening frontal headache that resulted within seconds of driving through a breaking wave. The pain continued for 20 to 30 seconds, only to be reinforced by the next breaking wave. Even then (35 years ago) we always referred to the pain as the ice cream headache. — physician Mark Harris, letter to the British Medical Journal, 315:609 (6 September 1997).