getting wood at christmas or at the thought of christmas. wood meaning a stiffy, boner, hard-on, erect penis.
"I'd just had christmas dinner with my family when... BAM! Christmas Wood"

guy:have you done all your christmas shopping yet?
guy2:oh, aww... *get's "Christmas Wood"*... i gotta go to the toilet...

dude: i had a good ol' time christmas day,
dude2: christmas wood?
dude: yep.
by so1tired1right1now December 25, 2010
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