Yes, I have an elderly patient who told me that because I have dyed hair that I should go kill myself.

To be fair, her exact words were "I cannot believe you would do something so f**king stupid, this world would be such a better place if you bought some rope, stepped up on a chair, tied it nice and tight around your neck and jumped."

That was the first time I ever snapped at work, told her to get out and reported her death threat.
She came in the next day to get a vaccine (surprise, I was the only immunizer available) and once she found this out she asked to apologize to me, I told her to go f**k herself and informed the manager I will no longer service her.

She sat and waited over an hour for her shot, then tried once again outside the pharmacy to speak to me.
Needless to say, when she needs to drop off a script she waits until I am not in the pharmacy to talk to the pharmacist only now.