When you do anything Christmas-related
mom went christmasing at Ross Dress For Less
by CrayonEater4259 December 23, 2018
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to decorate an item or gift, to look all shiny, bright and christmassy.
i have christmasized a food hamper by adding christmassy bows and gold lametta and then gift wrapping the hamper.
by jennyr21 October 14, 2010
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The physical irritation due to overstimulation caused by Christmas decorations and hearing the same Josh Groban and Michael Buble Christmas CDs over and over and over again. Usually caused by overly enthusiastic co-workers and/or spouses. Initial signs may take one to two weeks to appear after first exposure, but conditions generally increase exponentially.

Related to Christmas fatigue.
"Do you mind if I turn the radio on? They've started playing Christmas music."
"Only after we stop by the store to get some Benadryl for the Christmasitis flare up I'm about to have..."
by A "Valued" Customer December 2, 2016
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Being unable to accomplish any schoolwork due to the excitement of Christmas around the corner. Similar to senioritis.
I can't study for midterms. I have a bad case of Christmasitis.
by Wildflowerpower December 3, 2014
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Someone who excessively, prematurely celebrates Christmas. A Christmaser jumps right from Halloween to Christmas. Completely ignoring Thanksgiving. A Christmaser watches Hallmark Christmas Movies in August, etc.
My neighbor dressed up as Buddy the Elf for Halloween, what a Christmaser.
If you have ever posted, "only 364 more days until Christmas" on Facebook, you might be a Christmaser .
by Tom Turkey November 2, 2018
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The day after Halloween when all the stores and restaurants come out with their Christmas decorations and themed items for sale. It’s also the day you can start decorating for Christmas because let’s be honest—Thanksgiving is a shitty holiday based on the murder of millions of indigenous American Natives and the pilgrims eventually killed them all with smallpox. Sure you can eat your turkey—but does anyone really decorate for Thanksgiving anymore?
Billy and Brenda went to the store on November 1. Brenda said “Holy shit! Look at all this Christmas stuff!” Billy replied “Duh, Brenda—it’s The CHRISTMASING…” Brenda laughed “oh yea….f those pilgrims!”
by Sleeper indigenous November 1, 2021
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To have finished decorating your home, or place of work, for Christmas. Usually done with a Christmas tree, lights, ornaments, ribbons, etc...
by Lisa_Tina December 28, 2015
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