[Tsuwabuki]

Well, I didn't study hangul too much, honestly. I should have done more, but there's a few I know.

annyeong haseyo = hello, good day, etc

gamsa hamnida (but run together to be pronounced gamsamnida) = "thank you" of sorts, in fact it doesn't mean this at all, but is used to express gratitude.

bap = rice

mekchu = beer

...and that's really all I learned in the time I lived there. Awful, I know.