Ski Trip Special: Swimming, Night, Outside, -10°C

This was a discipline I did not think I would survive.
Swimming outside at -10*C seemed to have been the highlight of of the ski trip.
  The water was pleasantly warm, but our hair had frost on it.
If I had ever wondered about the expression 'my brain has frozen' I do not need to wonder any more.
  It really did feel like my brain is freezing. My ears were already frozen and my hair was white with icicles. My brain was just about to hibernate when Mateusz, my friend, came up with an excellent idea!
  You need to keep your head underwater as long as possible.
Only come up for a breath if necessary.
Now this has warmed my head, but I've read that after 5 minutes without oxygen the brain suffers serious and possibly irreversible damage.
  This worried me a bit.
There has been a genius in our group. He found a solution.
  It was very simple, and hence the best solution. You would never have guessed!
We simply followed his lead and used our hands to stop the water jets above our heads.
  The water jets protested, and made a funny noise because they didn't want to be stopped. This caused a lot of commotion in the pool, attracting the person in charge.
  He shouted in French, and as a punishment sent us inside and away from the freezing air.
Victory.
This is an excellent example of teamwork and simple psychology used by clever children to save their lives.
Thank you for your loyalty,
Marcus C