I'm just going to take a wild guess and say it's a reference to the games that reindeers play, specifically probably inspired by the song Rudolf the rednosed reindeer.
I've had it with these motherfucking reindeers and their motherfucking games!!!
Fucking reindeer games!
by xerdo September 26, 2013
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the act of putting christmas decoration reindeer into various sexual positions.
We're going to go reindeer gaming tonight. My neighbors just bought two new reindeers and they're just asking for it.
by steve December 21, 2004
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A trivial activity often hindering a more important task

similar to simply BSing around

Etymology: the song "Rudolf the Red Nose Reindeer"
Alen: "hey man, check this out."

William: "Damn it Alen, I don't have time for your stupid reindeer games!"
by daemonbellum October 3, 2009
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Absolutely terrible movie starring Ben Affleck.
I can't believe I just wasted 2 hours watching Reindeer Games...I'm going to find Ben Affleck and make him pay me back.
by Crizz March 21, 2006
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Anything you can do during the winter, preferably starting in December and ending on the 25th.

These games can include anything, most however, pertain to the cold or snow and include alcohol/egg nog.

Examples such as: case race with a case of beer, skitching on a sled behind a truck on the street, piling snow on top of a small car that you know cannot handle it, drinking, sitting in the backseat with the windows down with only underwear on to see which contestant bails first "freeze out 2011/2012!!!!"

Almost anything can be considered a Reindeer Game during December. All you really have to do is add some beer or egg nog. It doesnt have to exclude people like poor ol rudolph, but you can bring and sling whoever the hell you want.
Fletcher: You ready for these Reindeer Games?

Tylee: Fuck yes, December 1st! Lets get some beers and some sleds. Snow's-a-comin.
by CharlesGrubner69 December 13, 2011
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When you stick a string of jingle bells up your ass and run around with antlers on playing 'reindeer games'.
"Me and my girl played reindeer Games last night! Her ass twerked me a song of Christmas past!"
by ErosSlav6661 January 3, 2021
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Like the "Hunger Games" but with a red nosed deer, a kinky elf, a fucked up, acid tripping santa, and several puffy penguins along with wheelchairs instead of weapons.
"Welcome, to the 36th annual 'Reindeer Games!'"
by LuciferianFantasy June 1, 2018
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