I had the same problem with my mother and Girugamesh. But after she listened to them, now she requests them ^.^
As for my friends they like it, it's other kids at my school. They say you can't understand the words, well for 1 if I really wanted to know I'd look for translations, and 2, you can't understand the words in rap, but you still listen to it don't you? ^.^ They usually shut up after that.