Well, it was just one of those typical "only-one-who-understands-each-other" moments, where both of them decided they did not want to wear coats on a chilly day. They convinced each other that it wasn't cold at all and had a little competition to see who could withstand the cold better. Of course, being identical twins, they were virtually inseparable and shared this crazy determination to prove that the winter chill was no big deal! They ended up snuggly in sweaters indoors, grudgingly conceding defeat to each other.