Verb. To undo the act of seeing something; to erase the memory of having seen something, or otherwise reverse the effect of having seen something.
Internet meme: What has been seen cannot be unseen.
by Jimmybone D May 12, 2010

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The Urban Dictionary Mug

Lotsa space for your liquids.

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The Urban Dictionary Mug

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The Urban Dictionary Mug

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The Urban Dictionary T-Shirt

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Top Definition
Adj. Used to describe an object so horrific that it becomes seared into your retinas such that it can never be forgotten.

See also: goatse, tubgirl, What the fuck, goggles
Hey, look what I found on /b/.
>>OH GOD, YOU CAN'T UNSEE THIS SHIT, ASSHOLE.
by Rehn March 26, 2007

The Urban Dictionary Mug

Lotsa space for your liquids.

Buy the mug

The Urban Dictionary Mug

Lotsa space for your liquids.

Buy the mug

The Urban Dictionary Mug

Your favorite word on a white mug.

Create a mug

The Urban Dictionary Mug

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

Buy the mug

The Urban Dictionary T-Shirt

Soft and offensive. Just like you.

Buy the t-shirt

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