[Payne222]

Alright, so one night with my Japanese teacher,
my friend and I are going on reading the Japanese text
and my friend mixes up 「る」 and 「ろ」,
so I say, "Hah, you're such a Polack!"
And then it hit me, is there an equivalent in Japanese?
So I asked him and he said, while he was in Japan,
only with his closest friends, you could joke around
and instead of calling someone a Polack, they would use...
Korean. As in, "Ah, you're such a Korean!"
Is that true?