Crimbo Limbo is the time in-between Christmas Day and New Years Day, where you feel fulfilled, eat lots, and give yourself alcohol poisoning.
Ryan: Dude, I haven't done anything productive in three whole days, yet I still feel great!
Lewis: Well, that's Crimbo Limbo for ya!
The period after Christmas Day and before New Year's Eve, mainly spent sitting down and eating leftovers. Many find it extremely dull.
I'm so bored. It feels like crimbo limbo's been going on forever...