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A psychological complex by which a person becomes overwhelmed by the holiday season.
Traveling home in busy airports give me a christmasplex.

Fuck it, I'm not going home this Christmas. I get a christmasplex when I'm around my parents for too long.
by dqbhere November 18, 2013
1. The secular commercialist monster the holiday season has become, spanning of no less than two months, starting November 1 and ending once Target has sold out of 75%-off bullshit chachkies.

2. Christmas.
"I bought you this beautiful Christmasplex ornament shaped like ye olde holy Dollar."

"Merrrrrry Christmasplex, kiddywinks!"
by Eliphas Phatt December 26, 2013