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1.
Something thats only tight around or close to christmas
Dude1 " Dude did you see my sweater ? "

Dude2 " Hell yea dude its Christmas tight ! "
by Torched Tiki December 31, 2009
 
2.
The period of time after Christmas and New Years where the clothes you wore prior to the holidays that fit well, all of a sudden are a little tighter than they should be.
"I got this new dress shirt for Christmas. I went to wear it with my favorite work pants, but they are a little Christmas tight now."
by Josh Aronoff January 02, 2008