Korean names that sound terrible in English:
석범- suk bum
오유석- Oh yu suk
민지- Min Ji (British English)
English names that sound terrible in Korean
Josephina- 조세피나 (sounds a bit like something else)
I think there might have been another few more, but I'll update if I can remember them. Please feel free to add to the list in the comments section.
On a similar note (well, not really) we also discussed some simple jokes in Korean. I was amused by these:
이마트 반대말 뭐에요?
세종대왕이 만든 우유 이름은 뭐에요?
I'd translate this, but they are play on words that would just take too much explaination. If you ask me, I'll translate specific words for you if needed.
Do you know any other good jokes in Korean?