I remember going for a walk with a friend midwinter, underestimating the distance, overestimating the temperature (i mean, it -was- snowing, but that meant nothing... right) So we went out in our tshirts and shorts.
In the end, my mum spent 2 hrs trying to turn 2 goth smurfs back into human boys. I'd say I learnt a lesson that day, but one must not tell lies.