“Decorating the tree”is a term that refers to having sex with your significant other. More specifically decorating your partners face with a white substance

Similar terms such as “deck the halls
Me: “Hey bro, I’m gonna go decorate the tree tonight! Shes going to look like a glazed donut when I’m done with her!”

Friend: Don’t forget to deck the halls as well!”

Me:”me and my girlfriend were decorating the tree last night”

Friend “I’m guess the tree wasn’t the only thing you were decorating, huh?”
by Deekp145 December 05, 2019
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Proposition a woman for sex while she's on her period.
"Hey baby, why don't you toss that tampon aside and decorate my Christmas tree."
"Um...why are you in the women's restroom?"
by Redwings15 December 11, 2015
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A cheap excuse to use during the holiday season for not hanging out with friends.
Tye: Hey why were you not at the b-ball court.
Damien: Oh I was decorating my Christmas Tree.
Tye: Dude What the fuck that's a lame excuse!
by Santadude69 December 10, 2013
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