HAHA i bet he is so tired of people questioning him about it he did not notice yours.
I know it is rude but somethimes i get that way too, not with kilts yet so much but with my tattoos..... i swear i get asked "did that hurt" every day 10 times. sometimes i just don't even answer at all, other times i have taken to answering, no not at all what would make you think a tattoo would hurt.