A questionable Commander In Chief's partial or total loss of memory regarding the actual sequences of events in an attempt to not take responsibility for them. It is the opposite of Truman's famous phrase: "The Buck Stops Here!" It is a strategy in politics where the One In Power attempts to attribute to another person or group the responsibility for one's own lack of leadership or mistakes. Made famous by Barack Hussein Obama's denial of certain emails regarding the Libya incident 2012; after being caught with his pants down he later tried to pin it on Hillary Clinton.
Did you see that last presidential debate?
Yea the president sure had one nasty case of Obamanesia!