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2. unsee
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.
1. unsee
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.
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