I have noticed that whenever a really old person (as in 70's and up) comments on my kilt, they always talk about their experiences with the "scotch" and ask if I am "scotch." I never point it out, I just figure it's an outdated use of the word.

And of course it reminds me of my grandma, who always used to use terms which could lead to lawsuits, never realizing someone might find these monosyllabic slurs to be offensive.