There's a story in my family about my cousin Amy (a stellar human being, if you're seeing this: Hi Amy!) coming up to my Aunt Francis (an equally stellar human being from WAY back) when she was feeling badly, and asking what the bottle of pills was for.
"Those are to put me to sleep," Francis said.
Amy had exactly one experience with "put me to sleep" and it was with a pet dog. It took a while to console her enough to explain the misunderstanding.