Due to the magic of Prime Numbers, Chrischanukkahwanzaamas has its own set of silly, pseudo scientific/religious activities that can happen during the holiday. Anything having to do with Prime Numbers should be taken as a sign of favor, excitement, and good luck. Like, "Oh, it's 11:13 pm, we should get naked - it'll be lucky!", or "Hey look, there are 7 dead racoons in the garage, must be a sign that this Chrischanukkahwanzaamas is going to the bestest!"

Orthodox Chrischanukkahwanzaamasites believe that you need to celebrate each day on the proscribed Prime Numbered day. Since most Chrischanukkahwanzaamas adherents are Unorthodox at best, most people celebrate what they want to celebrate, when they want to celebrate it. So, if you happen to have a crapload of leftovers, on say, the day after Christmas, or December 16th - you can celebrate Leftovermas then. No one is going to stop you.