ambesia/ambnesia 

Memory loss associated with intake of ambien or other sleep aids.

Jeez, there is a quart of Ben & Jerry's missing from my freezer! Did I eat this? I live alone... I must have ambesia/ambnesia!

My idiot husband is away on business and he says he called last night. It's actually there on the caller ID...could I have ambesia/ambnesia?

What the..., St. Louis? Did I drive here last night? I must have ambesia/ambnesia.

ambesia/ambnesia by AKolb March 28, 2009

Ambesia 

Memory loss due to a mix of sleep aids and booze

I rode a tiger last night? I must have been suffering from ambesia.

Ambesia by Badaducci March 15, 2019

Ambnesia 

The kind of amnesia experienced when one takes the sleep-aid Ambien.

Guy: Dude why did you text me in a foreign language last night?

Girl: I have no idea...I must have Ambnesia. I have candy wrappers in my bed, also.

Ambnesia by GinaMarie March 13, 2009

Repetitive Familiarity Amnesia 

The inability to remember if you did something you do every day.

Every morning when you leave the house, you push the button on the garage door remote closing the garage door. Then 10 minutes later, you can’t recall if you closed the garage door because you do the exact same action at the exact same time every morning, so they all blend together and you couldn’t tell if your memory was from that morning or any of the previous mornings where you went through the same motions like you have countless times before. You just experienced Repetitive Familiarity Amnesia.

Repetitive Familiarity Amnesia by TheChrisenator July 20, 2021

selective amnesia 

to benefit oneself by pretending to forget.

"Dude, if I loan you this twenty dollars please pay me back. Don't come down with a case of selective amnesia on me."

selective amnesia by Mack C January 21, 2007

Post-Amnesia

(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

Post-Amnesia by ITALUS September 12, 2011

Nostalgic Amnesia 

noun; a state of mind where one experiences a pleasant glow due to a combination of reminiscences of a past time, and completely forgetting how rubbish that time was whilst you were originally experiencing it.

Nostalgic Amnesia had set in, and Frodo found himself pining for the glory days in Mordor.

Nostalgic Amnesia by Dr Winterbourne February 21, 2009