can't for the life of me

can't for the life of me

if you say you can't for the life of you remember something, you mean that you cannot remember it at all I know I filed it somewhere but I can't for the life of me remember where.
See also: life, of
References in classic literature ?
I can't for the life of me see what right you have to ask me mine, or to question me at all, for that matter.
Fill a person with love for themselves, and what runs over will be your share, says a certain witty and truthful Frenchman whose name I can't for the life of me remember.