My dad is Korean American and my mom is white, and I spent the past summer studying Korean and the fall semester studying in Seoul, surrounded (or so it felt) by non Koreans obsessed with K-Pop, Kdramas, Idols, etc. My Korean is still very very iffy and my knowledge of Korean pop culture is very slim....I try to tell myself that listening to Korean music or watching Korean dramas isn't what makes you Korean/Korean American in the slightest. It's lived experiences that matter, and there isn't just one way to be Korean. However, I really really feel you in that it's so humiliating to know so little about your own culture, especially when white friends/classmates like to position themselves as experts. I've been in situations where white classmates know more about k-pop or Korean history or whatever than me, and seem to really enjoy "educating" me. It's a shitty feeling.