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.
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!"