good old boy      
noun [ C ]  informal uk/ˈɡʊd əʊld ˌbɔɪ/ us/ˈɡʊd oʊld ˌbɔɪ/
 标准的美国南方男子(爱和朋友开玩笑、固执己见)
a man from the southern US who enjoys spending time with his friends, and disapproves of ideas or ways of behaving that are different from his own