Looking for someone who is fluend it Russian to translate something for me?

My neighbor who is a Russian immigrant (very unfriendly with my family for no apparent reason) always calls me a$$hole durgen, of course I understand the first word, but the second word which he pronounces as durgen has no apparent meaning to me, please let me know what this word means in a detailed explanation and or send me a link that will give me the answer, thanks!