Fell through the ice checking traps when I was 14, was shaking uncontrollably by the time I got home an hour later, 1st dip.
Took my swim test for Ranger batt. after we broke up an inch of ice, teeth were chattering so hard they excused us from reciting the creed, 2nd dip.
Took my 3rd dip while serving in Germany, after a night of heavy drinking a young frauline invited me to jump through a hole in the ice with her, the warm up procedure made this my favorite dip by far! <hump>