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To forcibly remove or erase a particular memory of a person, place, or thing through voluntary physical brain damage.
Dude1: Dude, I couldn't go on living still thinking about my ex girlfriend. So I had my cousin hit me over the head with a 2x4 and I totally eternally sunshined that bitch.
Dude2: Dude, no way!
Dude1: Who turned off the lights?
Dude2: Dude, your ear is bleeding, and we're outside.
by pomtea August 10, 2008
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