I surfed waves when I was ten that I swore were 17 foot (probably more like head high). I know I went to school the next day and was saying it was 15 - 20 foot easy . I never told anyone I rode a 17 foot wave to make me look cool I was just so excited I wanted to get across how big it was to all the non surfers. When the non surfers are body surfing the shorebreak and swearing the face of the wave is 10 foot you better say it was 17 foot or else everyone will look at you and say "Big Deal". I had a friend in NJ who I heard tell a girl on the boardwalk that its not even worth going out unless it's 12 foot ! This from a guy who had been surfing a grand total of 4 times over the course of a summer. That was a good one.