halfheimer's 

Poor memory or inattention displayed by someone not old or adled enough to be suffering full Alzheimer's disease. Half of the poor memory usually associated with Alzheimer's.

"It was a shame how Hal acted in that meeting today after not reading the prep materials. He clearly wasn't listening to the discussion. He sounded like he had halfheimer's."

halfheimer's by Suga T April 8, 2008

halfzeimers 

Similar to alzheimers, but when you only forget half the time. senior moment

I had a real good meal the other day, and I can visualize the restaurant, but I can't remember the name of the place. Must be halfzeimers

halfzeimers by Jim Clark 54 May 27, 2006

half-heimers

when a married couple is working on a half of a brain.

Our half-heimers is working because I forgot to buy wine at the store but he remembered.

half-heimers by Imakokopelli October 19, 2010