Top Definition
When you turn your window a/c unit on and shut the windows and the door so that one segment of your apartment is nice and frosty, while the rest is a million degrees and muggy because that’s how hot it is outside. Then you never leave that room.
It was so hot yesterday that I couldn't even leave my apartment - I just coldboxed my bedroom instead.
by lesleygee June 21, 2010

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To smoke marijuana in a closed area that is so uncomfortably cold that it removes the pleasure from smoking in the first place.
We cold boxed Nick's garage last night. It fucking sucked.
by Phil Stoner February 10, 2010

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The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

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The Urban Dictionary T-Shirt

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Creating a cold room for no apparent reason in the winter. Strategies used include but are not limited to; opening the window in the winter months, using a fan, and removing clothing in order to feel the cold more. The intention is to create a reverse sauna.
University students made a cold box yesterday for no reason except to be cold.
by coldbox December 01, 2013

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The Urban Dictionary Mug

Lotsa space for your liquids.

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The Urban Dictionary Mug

Your favorite word on a white mug.

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The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

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The Urban Dictionary T-Shirt

Soft and offensive. Just like you.

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The Urban Dictionary T-Shirt

Smooth, soft, slim fit American Apparel shirt. Custom printed. 100% fine jersey cotton, except for heather grey (90% cotton).

Buy the t-shirt