A three day holiday celebrated for 36 hours in between traditional Christmas and New Years Day. JimmyChristmas is a time to wind down from the chaos that often leads up to the traditional Christmas holiday. Legend has it, that if you wish Jimmy a Merry JimmyChristmas during the holiday, and you have been good on all year, He will give you a gift. JimmyChristmas is often celebrated by seeing live music, the exchange of gifts and intense relaxation.
JimmyChrist·mas·sy, JimmyChrist·mas·y, adjective
I saw Jimmy across at a Phish show one JimmyChristmas. I ran over to him, wished him a merry JimmyChristmas, and he gave me a new CD. He gave my friend a tie with really swell fish on it!