1. When your memory fails during and/or after a night of drinking alcoholic beverages.
2. Not remembering previous or future plans due to imbibing quantities of alcohol.
Jeff met Sandra while pounding shots at the bar last night, but didn't remember her name and that he married her in Vegas. Jeff had one of the worst cases of boozeheimer's his friends have ever seen.
Robert had too much alcohol to drink and did not remember he made plans to meet friends later that night. He blamed his boozeheimer's while downing another Pabst.
John isn't a flake, he just had a case of boozeheimer's.