Origin of the word: when the Tickle Me Elmo toy came out in stores for the first time, people trampled one another at the toy store in order to get their hands on one. The insanity that was caused by the release of the child's toy inspired this word.
definition - Anyone who drives like a maniac during the holiday season.
Reasons could involve; needing to get to the store before someone else purchases something they want, wanting to get home as fast as possible with a complete disregard for safety, or just being a complete douche bag who can't handle sitting in traffic for more than a few seconds without going ballistic.
"LEARN HOW TO DRIVE YOU FUCKING TICKLE-ME-ELMO!"
"I can't drive with all of these Tickle-me-Elmos on the road.