The day after Christmas where all the stores have sales. Boxing Day is a public holiday in the United Kingdom, Australia, Canada, New Zealand, Hong Kong and countries in the Commonwealth of Nations with a mainly Christian population. In South Africa, this public holiday is now known as the Day of Goodwill. It is based on the tradition of giving gifts to the less fortunate members of society. Contemporary Boxing Day in many countries is now a "shopping holiday" associated with after-Christmas sales.

"Now that I am finished shopping for all my freinds at Christmas I am going to go boxing day shopping for myself!"
by Natasha T December 26, 2008
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some random ass retarded fuckin holiday i always circle on my calendar so i can hit people a lot and not get in trouble for it cuz no1 knos what the hell this holiday is
tim-lets beat his ass
ray-fuck it, just wait till boxing day..hell get his*shakes fist angrily*
by aflack February 17, 2005
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The day after Christmas where people return presents they received because they either already had a duplicate, or just didn't like the item.
17:03 Joe32: what do you guys do on boxing day?
17:03 John33: Return crap presents.
17:03 Joe32: oh
17:03 John33: Buy more ****
17:03 Joe32: why dont we have that holiday?
17:03 John33: For returning presents.
by USS Vagrant December 27, 2005
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Commonly referred to as Christmas day
Dude, what you getting for Boxing Day Eve?
by mikmik12 December 27, 2011
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"What shall we do this Boxing-Boxing Day?"~Child
"We shall have a family party at your grandmothers this Boxing-Boxing Day."~ Father.
"w00t"~child.
by Halehaler December 30, 2011
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It is the one day over the Christmas holidays where you are entitled to uninterrupted X-Box entertainment without the apprehension of having to switch it off.

This remarkable day occurs either on Boxing Day or on some other agreed day with your spouse.

Whilst it is lovely spending time with family, this is an effective pragmatic settlement that helps to soften the unpleasant experience of unwillingly enduring dreary Christmas TV, imposed through common family demand.
"I hear you are not spending Christmas at home this year, is there any chance you could jump online for some Special Ops?"

"No, but I do have an X-Boxing day agreement. Unfortunately I am ill-fated to be in an unfamiliar habitat during Christmas, but Knowing X-Boxing day is nearing whilst I respectfully give my support to another’s customary routine, is especially reassuring."
by coin-op December 22, 2009
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A big "up yours" from all the major retail outlets.

Litteraly the day after we have just spent a tonne of money on presents they slash their prices, just to show us who wears the pants.
Guy " I bought these shoes for $50 bucks today!"

Girl " WTF! I bought my bofriend those for Xmas, and they cost $175!"

Guy " Ah. You were screwed by the Boxing Day Sales"
by 112112321 December 26, 2009
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