Top Definition
1. a condition wherein you forget pertinent facts or have memory loss due to an earth-shattering sexual experience

2. you completely block out the memory of a particularly traumatic sexual experience with a man and his member
Dammit I can't remember the name of the restaurant, but it's not surprising considering the cocknesia I've had since Saturday night's shagfest.
by 'Itten March 31, 2009

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