no idea. don't care. once i start thinking about it - there is enormous pressure to make every conversation meaningful because that may be the last time i talk to that person.
i plan to try to keep things as normal as possible up til the very end. not planning to record myself saying goodbye or any sort of last message to people. so last words will either be me muttering a curse word, rambling aloud to myself, or in response to someone else / finishing a conversation. probably 'what's for dinner?' or 'remind me to buy garbanzo beans when i go shopping tonight' if i had to guess. something mundane. c'est la vie.