(noun) - When someone makes a comment regarding a post on Facebook or tweet that you completely forget about.
Jody: So did you end up all wet this weekend?
Chuck: Excuse me?
Jody: Yeah you facebooked it was raining at your cabin.
Chuck: Ohh riggghhhhttt... Sorry, Post-Amnesia
by ITALUS September 12, 2011
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When you nut so hard that you forget what you were doing before, you forget that there was a time before you nutted.
by Polarisation June 19, 2023
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Having been told something while playing videogames then forgetting what it was when you are done.
Mom:"Did you put the clean clothes in the dryer like I asked?"
Son:"Sorry Mom, I had post videogame amnesia and I forgot"
by Warrior Will July 19, 2012
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When just after you gave a speech in public, you can't remember how you did or exactly what you said or how long you were talking.
"Dude, i have post-speech amnesia. Can you like record my speech for me so I can watch it afterwards and see how good I was?"

"Sure dude, I hate having post-speech amnesia. That ish sucks."
by collegekid4yourinfo March 12, 2013
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