absent mindedness, n.All

Funny, I don't remember being absent minded

Absent-mindedness is forgetting to remember, or remembering to forget.

The chemist, Robert Bunsen, once proposed to a girl who said yes, but then lost himself in his work for a few weeks, only to lose the girl for not being able to remember if he proposed or not.

Absent-mindedness is the mental absentia resembling a mild form of dementia.

Absent-mindedness is searching for the horse you are riding.

Absent-mindedness is being lost in thought because it is unfamiliar territory.

Absent-mindedness is when you forget, but it's gross negligence when someone else forgets.