I didn't spend much time around my maternal grandmother so never really learned anything from her, but my mom has many sayings she learned from her granny who came to Canada from Scotland, some of them unpronounceable to me. My mom also never really worried about whether or not those sayings would hurt your feelings (still doesn't and she's 86).
I told her once that I was bored. She said "only boring people get bored". I learned real fast not to say that again, and just go find something to do;
or how about "would you like a little cheese with that whine?"