Winter Rafting?

I am not sure what compels guys to be guys, but these guys decided it would be "fun" to go white water rafting in the middle of winter.  I am not a big fan of rafting even in 90 degree weather.  But kudos to them for not letting winter limit their adventures.  Rafa had to cut the day short since we had early dinner plans with friends, but sounds like he had fun none the less.  And is it me, or do these guys look ornery enough to be hiding a some secret story?  Something perhaps they aren't willing to share with the wives : )